How Do You Get the Smell of Smoke Out of Walls?
Last updated October 25, 2026
The short answer
First Steps
Open windows and doors to let fresh air move through the space. Use fans to push stale air out. This helps reduce the smell before you do any cleaning. Remove curtains, rugs, and furniture that can trap smoke odor.
Wipe down walls with a sponge and a solution of warm water and mild dish soap. Work from top to bottom. Rinse with a clean damp cloth. This removes surface soot and some of the odor. Wear gloves and a mask to avoid breathing in particles.
Deep Cleaning
For smoke that has soaked into the paint, try a stronger cleaner. Mix a cup of white vinegar with a bucket of warm water. Test it on a small hidden spot first. Vinegar neutralizes odors without harsh chemicals. You can also use a commercial odor remover.
If the smell lingers, consider washing the walls with a trisodium phosphate (TSP) solution. TSP cuts through grease and smoke residue. Follow the package directions and rinse well. Let the walls dry completely before you paint or seal them.
- Wipe walls with a dry sponge to lift soot
- Use a vacuum with a HEPA filter on walls and ceilings
- Wash with vinegar solution or TSP
- Rinse with clean water and let dry
- Repeat if the smell persists
Sealing the Walls
After cleaning, you may need to seal the walls to lock in any remaining odor. A shellac-based primer acts as a barrier. It prevents smoke chemicals from bleeding through new paint. Apply one or two coats, then paint as usual.
Sealing works well when the drywall is still solid. If the walls are stained or the paint is peeling, the smoke may have soaked deeper. In that case, sealing alone might not be enough.
When to Replace Drywall
Smoke can penetrate drywall and reach the insulation behind it. If the odor is strong after cleaning and sealing, the drywall may need to be removed. This is a bigger job that involves cutting out sections and installing new drywall.
You can test how deep the smoke went by wiping a small area and smelling it after it dries. If the smell comes back, the porous material is holding it. Local water damage pros can assess the damage and recommend the right step.
- Check for yellow or brown stains on walls
- Smell the wall after cleaning to test for lingering odor
- Look for peeling paint or bubbling
- Consider insulation replacement if the wall is opened
Professional Help
For heavy smoke damage, you might need a professional service. The pros use specialized equipment like ozone generators and thermal foggers. These can reach odors that regular cleaning cannot. They also know how to handle soot safely.
You can ask for an inspection to understand the extent of the damage. If you live in South Jordan, you can look for local water damage pros who also handle smoke cleanup. They can explain your options before you decide.
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Call Now (801) 845-3042Frequently asked questions
Can I just paint over smoke-stained walls?
Painting over smoke without cleaning and priming often fails. The odor and stains bleed through the new paint. Clean the walls first, then use a stain-blocking primer. For deep smoke, sealing or replacing drywall may be necessary.
How long does it take to get the smoke smell out?
It depends on how much smoke and what surfaces are affected. Light smoke may clear in a few days with cleaning and ventilation. Heavier smoke can take weeks or require professional treatment. Be patient and keep air moving.
Is smoke smell harmful to breathe?
Smoke residue can contain irritants, especially after a fire. If you feel unwell, see a doctor. Ventilate the area and wear a mask while cleaning. For serious smoke damage, consider having a professional handle it.