How do plug in air freshner work?

Plug-in air fresheners work by using a heat source to warm up a scented oil or gel contained in a cartridge or reservoir. As the oil heats up, it evaporates, releasing fragrance molecules into the air. Some models use fans to circulate the air more effectively, while others rely solely on passive diffusion. This process provides a continuous release of scent, helping to mask or eliminate unpleasant odors in a room.