: a device used to disperse chemicals intended to mask or eliminate unpleasant odors
The bathrooms should also have matching towels, soap and tissue dispensers, and a candle or plug-in air freshener with a pleasant scent. William Bronchick and Ray Cooper, How to Sell a House Fast in a Slow Real Estate Market, 2009
also: the chemicals dispersed from such a device
This smell is sharp and thin and chemical, not exactly the smell of air freshener and not exactly the smell of air conditioning but acrid and a little stale and specific to Vegas … Joan Didion, Esquire, May 1977