How do you deodorize a couch?

Apply enough baking soda to leave a lightly visible residue on the entire sofa. Leave the baking soda on the sofa for at least 15 minutes, or overnight for severe odors. The baking soda absorbs the smells from the fabric and cushions. Vacuum the sofa a second time to remove the baking soda residue.

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How can I make my sofa smell nice?

Sprinkle baking soda over your furniture and let it sit for at least 30 minutes or overnight for heavy odors. Then vacuum it up, taking lingering odors with it. Mist your furniture lightly with white vinegar in a spray bottle and let it air dry.