How to Get Rid of Smoke Smell in a Room, Car and Clothes

Quick answer: To get rid of smoke smell, put less of it into the air to begin with: smoke outside or by an open window, and breathe out through a carbon filter. After that, run a fan pointing outside, wash fabrics with a cup of white vinegar in the load, and wipe the hard surfaces down. Sprays and candles just cover it up.

You open the windows, light a candle and spray something that's supposed to smell like linen. For an hour or so the room seems fine. By the next morning it's back, a bit stale, and it's coming off the curtains and the couch.

That's because smoke smell doesn't stay in the air for long. It settles on things, which is why most quick fixes wear off. This guide covers why it sticks, how to keep less of it from getting into a room in the first place, and how to clean it out of a room, a car and your clothes once it's in. Cigarettes, a fireplace, dry herb: the method's the same. A few of the popular tips are a waste of money and one is actually bad for you, so we'll get to those too.

Why Smoke Smell Sticks Around

Smoke is a mix of gases and very fine particles. Fresh air thins the gases out fairly quickly, but the particles land on stuff. Oklahoma State University's extension service puts it simply: the odor comes from "tiny, microscopic particles that cling to walls, furniture, floors, clothing and other items inside your home" (OSU Extension).

Soft things hang onto it most. Mayo Clinic notes that tobacco smoke residue "can get stuck in soft items such as clothing, furniture, drapes and carpets," and that it can stay there for months (Mayo Clinic). Researchers have a name for this: thirdhand smoke.

That residue doesn't stay put either, and that's where the next-morning smell comes from. A review in Environmental Health Perspectives describes how "some smoke compounds adsorb onto surfaces and then desorb back into the air over time" (Burton, 2011). Put simply, the room gives the smell back, slowly, for as long as the residue's there, and you'll notice it more on a warm day or once the heating kicks in.

An open window helps with whatever's still in the air. Whatever has already settled on the couch and the walls has to be cleaned off.

Start at the Source

Most guides skip this step, which is odd, since the EPA puts it first. Of the three ways to deal with indoor air pollution, the agency says, "the first approach — source control — is the most effective," ahead of ventilation and air cleaning (EPA). Put less smoke into a room and there's less to clean out of it later.

With smoke, that mostly comes down to habits.

• Smoke outside if you can. Balcony, yard or doorway, it doesn't much matter. Nothing else on this list comes close.
• If you're inside, pick one spot. Ideally that's next to a window with a fan in it pushing air out. Keep away from the bed, the couch and the curtains, because those are what hold the smell.
• Exhale through a filter. A lot of the smoke in a room is what gets breathed out, and a personal air filter catches it right as it leaves you.
• Keep your pipe clean. Old resin smells, burns and goes stale all by itself, so don't let it build up. Our guide on how to clean a pipe covers glass and metal.
• Don't smoke in the car. It's the smallest room you own and it's full of fabric. Once the smell's in there, it's a real job to get out.

How a personal air filter works

You breathe out through one end, and what comes out the other has gone through layers of carbon and filter media. Our Personal Air Filter pairs carbon with a HEPA-grade layer, plus a hydrophobic screen at the front so the moisture in your breath doesn't clog the media early. Each cartridge is rated for over 500 exhales. When one's spent, you swap the cartridge and keep the rest.

Why carbon? Activated carbon is full of tiny pores, and odor molecules stick to them. The catch is how much of it you've got. In the EPA's words, "Activated carbon filters can be effective, provided that there is a large amount of material used in the filter" (EPA). A room purifier with a thin carbon sheet stretched across a whole room's worth of air falls down right there. A personal filter flips that around and puts all of its carbon on one small stream of air.

It has limits, though. It only handles what you exhale, and the smoke coming off the end of a burning pipe goes straight into the room, so keep the window open as well. If you'd rather have something compostable, our Plant-Based Filter does the same job in a body made almost entirely from cornstarch.

How to Get Smoke Smell Out of a Room

Work from the air down to the surfaces. Wiping walls while the room's still hazy is wasted effort.

1. Ventilate properly. Open windows on opposite sides if you've got them, so air actually moves through the room rather than pooling by one window. A box fan in a window, facing out, pushes stale air out and pulls fresh air in behind it. The EPA notes that ventilation "helps remove or dilute indoor airborne pollutants coming from indoor sources" (EPA). Run the bathroom and kitchen extractor fans while you're at it.
2. Wash everything that can be washed. Curtains, throws, cushion covers, bedding. Nothing else in the room holds as much smell. The clothes section below has the method.
3. Wipe hard surfaces. Walls, windows, tables, shelves, light switches. Smoke leaves a thin film on all of it, and you'll often see it come off yellow on the cloth. White vinegar and water handles most of it. Glass is the giveaway, because it stays hazy until it's clean.
4. Deal with carpets and the couch. Sprinkle baking soda over carpets, rugs and fabric upholstery, leave it overnight and vacuum it up slowly. If the couch still smells after that, steam clean it or use an upholstery cleaner, which gets deeper than baking soda can.
5. Change the filter on your heating or AC. If the system's been on, it's been pulling smoky air through that filter, and an old one keeps pushing the smell back out.
6. Leave something absorbent out for a few days. OSU Extension suggests bowls of baking soda or activated charcoal around the room. They're slow and won't clean a room by themselves, but after the real cleaning they help with what's left.

An air purifier can handle the last of it if you buy the right kind: a HEPA filter for particles plus a substantial carbon filter for odor. As the EPA puts it, "most filters are designed to filter either particles or gases," so a HEPA-only unit clears the haze and leaves most of the smell behind. The agency is also clear that "filtration does not replace the need to control pollutants and ventilate." That's why it sits at the bottom of this list, not the top.

How to Get Smoke Smell Out of a Car

A car is a small closed box lined with fabric, which is about the worst place smoke smell can get into. You use the same method as a room, in less space.

1. Empty it and air it out. Pull out the floor mats and anything loose, leave every door open, and give it as long as you can in the sun and wind.
2. Vacuum everything. Seats, carpet, the gaps between and under the seats, and the headliner if it's fabric. Ash and residue end up in places you never look.
3. Baking soda on the seats and carpet. Leave it overnight with the windows cracked, then vacuum again. Wash the floor mats on their own.
4. Wipe every hard surface. Dashboard, steering wheel, door panels, and the inside of the windows most of all, since that film is worst on glass.
5. Replace the cabin air filter. It's usually behind the glove box, and most people never think of it. If the car smells every time the fan comes on, that filter's almost always the reason.
6. Empty and wash the ashtray, if the car has one.

Years of smoking in a car can mean doing all this more than once. The residue works into the foam and the headliner, which are hard to reach at home, so a professional interior detail may be worth the money.

How to Get Smoke Smell Out of Clothes and Hair

Clothes are easy. Just don't rush the drying.

1. Wash them as soon as you can, on the warmest setting the label allows.
2. Add a cup of white vinegar to the wash. OSU Extension recommends 1 cup of vinegar in the load, and another wash if the smell hangs on.
3. Smell them before they go in the dryer. This is where most people slip up. OSU's advice is plain: "Do not put smoky clothes in a drying machine because it can lock odors in the material." Still smoky out of the washer? Wash them again.
4. Dry them outside if you can. Fresh air and sun finish the job.

A coat, a bag or anything else you can't wash can hang outside for a day, or go in a sealed bag overnight with an open box of baking soda. A decent fabric spray will cover what's left. Just know it's covering, not cleaning.

Hair's simpler, since shampoo gets it out. It grabs smoke the same way fabric does, though, so if you can't wash it right away, wear a hat or tie it back and it'll soak up less.

What Doesn't Work (and What to Avoid)

Method	What it really does	Worth it?
Sprays, candles, incense, plug-ins	Cover the smell for a while	Only as a finishing touch
Bowls of vinegar or baking soda	Absorb a little, slowly	After cleaning, not instead of it
Air purifier with HEPA only	Clears particles, not much odor	Get one with real carbon
Ozone generator	Irritates your lungs, misses many odors	No

Sprays and candles are the obvious ones. OSU Extension says air fresheners and scented candles "only mask the smell for a short amount of time." All they do is put a scent on top, and nothing actually gets removed.

Ozone generators are the one to steer well clear of. Plenty of cleaning pages recommend them and they're sold as air cleaners, but the EPA says "NO agency of the federal government has approved these devices for use in occupied spaces." Ozone irritates your lungs. And at levels that are safe to breathe, the EPA says it "is not effective at removing many odor-causing chemicals" anyway. It can damage rubber, fabrics and dyes too. Some purifiers with ionizers, UV or plasma give off ozone as well, so check before you buy one. Professional ozone treatments do exist for empty buildings after a fire. That's specialist work, though, not something you run in the room you sleep in.

One safety note on cleaning. Some guides suggest bleach for smoke stains, and if you go that route, never mix it with vinegar or ammonia. Bleach and vinegar together give off chlorine gas, and a lot of the tips above use vinegar.

How Long Does Smoke Smell Last?

That depends on how much smoke, and for how long. One session in a well-ventilated room, with whatever was nearby washed afterward, often clears within a day. A room or car that gets smoked in regularly is another matter. Mayo Clinic says thirdhand smoke "can stay in place for many months even after you stop smoking," and it adds that "you can't get rid of thirdhand smoke with more airflow." So opening a window was never going to fix a smoker's room. The residue has to be cleaned off.

It lasts longer than most people would guess. The same Environmental Health Perspectives review found residue in homes that had sat empty for two months after the smokers moved out. Years of buildup can mean washing walls, cleaning or replacing carpet, and repainting with an odor-blocking primer.

What About Weed Smell?

Weed smell doesn't behave quite like cigarette smoke, so it gets its own section. Most people blame terpenes for the skunky note. That turns out to be mostly wrong. A 2021 paper in ACS Omega found that "the compound 3-methyl-2-butene-1-thiol was identified as the primary odorant" (Oswald et al., 2021). It's a sulfur compound. According to the American Chemical Society's write-up, it's the same one that makes beer left out in the sun taste skunky (ACS via ScienceDaily).

Terpenes still play a part, and they get going before anyone lights up. From the City and County of Denver's air-quality guide for licensed grows: "Cannabis plants naturally emit terpenes, which are volatile organic compounds (VOCs), as they grow" (Denver, 2019). That's how a jar on a shelf can make a room smell all by itself.

Grow facilities deal with this every day, and they use carbon. The same guide says "Carbon filtration is currently the best control technology for reducing VOC emissions" and that "a properly installed and maintained carbon filtration system is highly effective at controlling odors." One caveat. The guide was written for commercial grow facilities. Nobody should treat it as a lab test of home gear.

The basics hold up in a bedroom anyway. Carbon traps these compounds. You need plenty of it. It wears out and has to be replaced. And according to the guide, high humidity makes carbon filters work less well.

At home, the routine is the one from earlier in this guide. Exhale through carbon, put a fan in the window facing out, and wash or wipe whatever the smoke landed on. Then add two things. Keep the room cool and dry where you can, since Denver's guide says high temperature and humidity "will perpetuate any odor issues." And store the flower in something that actually holds smell in, like a carbon-lined bag from our smell proof bags range. Otherwise the shelf keeps adding to the problem.

Keeping It From Building Up Again

Once the room's clean, keeping it that way is mostly the source-control stuff from earlier. Smoke in one spot by an open window, exhale through a personal air filter, wash the throws and cushion covers every week or two, and clean the pipe before it gets sticky.

Storage matters too. A bag or tin of dried herb on a shelf leaks smell all day long. Airtight and smell proof aren't always the same thing (we get into that in is airtight the same as smell proof), and carbon-lined bags work on the same principle as the filter, which how smell proof bags work explains. For a pocket, our Airtight Pocket Case seals on a compressed silicone O-ring rather than a friction lid.

Smoke Smell FAQ

What absorbs smoke smell the most?

Activated charcoal, and lots of it. It's the same carbon smoke filters use, and the EPA's catch is quantity, so a thin layer barely registers. Baking soda comes second, spread straight onto carpet or upholstery. Both only mop up what's left after airing out and washing.

Does baking soda get rid of smoke smell?

Slowly. Sprinkle it on carpets, rugs and fabric seats, leave it overnight and vacuum it up. A bowl of it on a shelf only catches the last traces after a proper clean.

Does vinegar neutralize smoke smell?

On surfaces, yes. Wipe walls and glass with vinegar and water, and add a cup to the laundry. The sour smell fades as it dries. A bowl of it on the counter does very little.

Does Febreze or air freshener get rid of smoke smell?

Not really. OSU Extension says scented products "only mask the smell for a short amount of time." The residue is still in the couch and curtains, so the smell comes back. Spray last, after cleaning.

Does an air purifier get rid of smoke smell?

Only if it has a big carbon filter, because HEPA catches particles and the smell is a gas. Even then it can't reach the residue in the curtains and couch, so clean those first and let the purifier handle the air.

Why does my house smell like smoke when no one smokes?

Usually it's old residue. Smoke settles into walls, carpet and fabric and keeps releasing for months. Researchers have found it in homes left empty for two months after the smokers moved out. In an apartment it can also drift in from a neighbor through shared vents or gaps around doors.

Why does my car smell like smoke when the AC is on?

The cabin air filter. It caught smoky air every time the fan ran and now blows it back out. In most cars it sits behind the glove box. Swap it, then vacuum the vents and wipe the dash, which hold residue too.

Does smoke smell come out of clothes when washed?

Most of the time. Use the warmest wash the label allows, plus a cup of white vinegar. Smell them before they go in the dryer, because heat can lock the odor in. Still smoky? Wash again and dry them outside.

How long does smoke smell last?

Often a day or less after one session with a window open. In a room or car that's been smoked in for months, it can hang on for months, because it's in the fabric and on the walls. Mayo Clinic notes more airflow won't clear it. It has to be washed and wiped off.

What is a sploof?

Something you exhale through so less smoke reaches the room. The homemade kind is a cardboard tube stuffed with dryer sheets. A personal air filter pushes your breath through layers of carbon and filter media and catches far more.

How do you make a homemade smoke filter?

Toilet paper roll, dryer sheets stuffed inside, one more sheet held over the end with a rubber band. Cheap. It mostly perfumes your exhale, though, and the cardboard goes damp after a few uses. Dryer sheets have no carbon, and carbon is the part that traps odor.

What is the best sploof?

Look for a real carbon filter with replaceable media, so it doesn't go soggy, and a moisture screen at the front, because breath is wet. Any sploof only handles your exhale. Smoke coming off the pipe still needs an open window.

How do you get rid of weed smell fast?

Carbon, a fan and a cloth. Exhale through carbon, put a fan in the window facing out, and wash or wipe whatever the smoke settled on. Licensed grows rely on carbon for these compounds, and a spray only adds scent on top. Heat and humidity make it linger, so keep the room cool and dry.

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