An air freshener is a product designed to mask or eliminate unpleasant odors in indoor spaces. It typically comes in various forms, including sprays, gels, plug-ins, and scented candles. Air fresheners often contain fragrances and other chemicals that help create a more pleasant atmosphere in homes, offices, and vehicles. These products work by releasing scent molecules into the air, which can neutralize bad smells or simply cover them up. Some air fresheners also contain antibacterial agents that can help reduce odor-causing bacteria. Popular brands include Febreze, Glade, and Air Wick.