AromaTech AroMini BT Scent Diffuser w/Bluetooth Cold-Air Diffusion Scent Machine for Home, Office, Hotel, Spa – Nebulizing Diffusion System for Essential Oil Blends The easiest, cleanest way to scent your home Experience longer-lasting, evenly distributed fragrance—with no residue. This innovative cold-air diffuser disperses scents using filtered air rather than water or heat. The result: a cleaner, more consistent scent experience. Great working Condition Retail: $295