Air fresheners are products designed to release pleasant scents into an environment, helping to either enhance the aroma or cover up unwanted odors.

They come in a wide variety of forms, such as sprays, gels, oils, liquids, solids, plug-ins, hanging disks, beads, potpourri, wick diffusers, and scented candles. These products can be categorized as either active or passive, and they offer different modes of fragrance release, including instant, intermittent, or continuous options. Additionally, air fresheners encompass a range of items like air care products, deodorizers, and odor neutralizers.

Beyond portable options, there are also integrated scented air systems that distribute fragrance throughout a space, often by connecting a diffuser to the HVAC system.

In our series, air fresheners are defined as products that introduce a pleasant scent or mask existing odors in the air.