DH Lifelabs Aaira + Humidifier 4-in-1 Air Purifier, Sanitiser, Humidifier & Odour Neutraliser. Removes 99.9% of Bacteria Viruses Mould. Bedroom Lounge. QUIET OPERATION: With noise levels as low as 35 dB, the Aaira Mini cleans your air without keeping you up at night.