How to Get a Smell Out of a Couch in a Small NYC Apartment
26.07.2026
To get a smell out of a couch, first find the upholstery cleaning code on the tag under a cushion, then vacuum, sprinkle baking soda over the whole surface, and let it sit for several hours before vacuuming it up. For lingering odors, spot-clean with the cleaner your code allows (W, S, WS, or X). The code decides everything: the wrong liquid can stain or shrink the fabric.
What you'll need
- A vacuum with an upholstery attachment
- Baking soda (a full box)
- A clean, dry white microfiber cloth (dye-free, so it won't transfer color)
- Distilled water in a spray bottle
- A small amount of dish soap (only if your code is W or WS)
- An upholstery-safe solvent or dry-cleaning product (only if your code is S or WS)
- A fan, or an open window if yours opens
Step by step
- Read the tag first. Lift the seat cushions and look for a care code. W means clean with water-based products. S means solvent only, no water. WS means either is fine. X means vacuum only, no liquid at all. If you can't find a tag, treat it as X until you test a hidden spot.
- Vacuum thoroughly. Run the upholstery attachment over the cushions, seams, and crevices where crumbs and pet hair trap odor. Pull cushions out and vacuum the deck underneath.
- Apply baking soda. Sprinkle an even layer over the whole couch, working it lightly into the fabric with your hand. Baking soda absorbs odor and is safe for every code, including X.
- Wait, then vacuum. Leave it at least a few hours, or overnight if the smell is strong. Vacuum every bit back up.
- Spot-treat if needed. For a W or WS couch, mix a drop of dish soap into distilled water, dip your cloth, wring it nearly dry, and blot the smelly area. Never soak it. For S, use only the upholstery solvent, following its label. Blot, don't rub.
- Dry it fast. Point a fan at the couch. In a small apartment, damp upholstery near a steam radiator can grow mildew, so keep air moving and don't let it sit wet.
What NOT to do
Don't spray water or vinegar on an S-code or X-code couch. Water leaves rings on microfiber and can shrink or watermark solvent-only fabrics, and those rings are hard to reverse at home. Don't oversaturate any fabric: liquid that soaks into the foam takes days to dry and comes back as a musty smell. Skip colored cloths and paper towels that shed. Don't drape a wet couch against a radiator to speed drying, and don't dump on scented sprays to mask an odor before you've removed the source, because the smell returns once the fragrance fades.
When to call a pro
DIY handles surface smells and fresh marks. But microfiber water rings, odors that have soaked deep into the cushions, pet accidents that reached the foam, and set-in stains usually need equipment a renter doesn't have, plus a controlled amount of moisture and fast extraction so nothing stays wet in a small apartment. If baking soda and careful spot-cleaning haven't fixed it, or you're nervous about the care code, book deep cleaning with CleanWhale and let someone match the method to the fabric.
FAQ
How long should baking soda sit on a couch?
A few hours works for mild smells; overnight is better for strong or set-in odors. The longer it sits, the more it absorbs. Just make sure you vacuum all of it back up afterward.
Can I use vinegar to get a smell out of my couch?
Only on a W or WS couch, heavily diluted with distilled water, and blotted, not soaked. Vinegar is water-based, so it can stain S-code and X-code fabrics. Test a hidden spot first and expect a temporary vinegar smell as it dries.
Why does my couch still smell after cleaning?
The odor is usually deeper than the surface, in the foam or the deck under the cushions. Surface cleaning won't reach it. If the smell keeps coming back, the cushions likely need a deeper treatment than a cloth can do.
What does the X code mean on my couch tag?
X means vacuum only, no water and no solvent. For these fabrics, stick to vacuuming and baking soda for odor, and have any liquid cleaning done professionally to avoid staining.
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