The provided search results do not contain specific methods for cleaning a sofa. Based on professional cleaning expertise, here are several effective ways to freshen up a smelly sofa.
The first step in addressing sofa odors is a thorough vacuuming. Use an upholstery attachment to remove all loose debris, dust, pet hair, and crumbs from the surface, crevices, and under the cushions. This initial step removes a significant source of odors before you begin deeper treatments.
For general mustiness or lingering smells, baking soda is an excellent natural deodorizer. Sprinkle a generous layer of baking soda over the entire fabric surface of the sofa. Allow it to sit for at least a few hours, or even overnight, to absorb the odors effectively. Afterward, vacuum up all the baking soda residue completely.
If odors persist, a solution of equal parts white vinegar and water can be used. Before applying it, check the sofa's care tag for cleaning codes (W, S, W/S, X) and spot-test the solution on an inconspicuous area to ensure it doesn't cause discoloration. Lightly mist the fabric with the solution using a spray bottle; do not saturate it. Allow the sofa to air dry completely, preferably near an open window or with a fan. The vinegar smell will dissipate as it dries, neutralizing other odors along with it.
For stubborn organic smells, such as those from pets or sweat, an enzyme-based cleaner is highly effective. These cleaners contain enzymes that break down the protein-based molecules causing the odor. Follow the product's instructions carefully, and always spot-test first. For very strong or set-in odors, consulting a professional upholstery cleaning service is the best course of action.
