A deodorizer is a substance or device used to remove unpleasant odors from an environment. It can be in the form of sprays, candles, gels, or other products that are designed to neutralize and mask bad smells. Deodorizers work by breaking down or absorbing odor-causing molecules, such as bacteria, mold, or mildew, which are responsible for unpleasant scents. They can be used in a variety of settings, including homes, offices, bathrooms, and cars, to create a more pleasant atmosphere by eliminating unwanted smells.