Proper humidity level during dry winter months keeps indoor air pleasant and comfortable. The Bionaire^® Warm Mist Humidifier quickly and quietly disperses a warm, visible mist in less than 60 seconds for instant relief. It is designed with a medicine tray for aromatherapy and medicinal vapors to soothe dry throat, sinuses and irritating cough and cold symptoms. In addition, it is treated with antimicrobial properties*⁴ to help protect against bacterial growth and eliminate odours. Filter free operation. Recommended for medium-sized rooms.