... or odors, look for an air purifier with a carbon filter. The Air Cleaning Stages: 1st stage starts with Cotton filtering ... stage comprises a UV Light5th stage is an Activated Carbon Filter - Absorb mild smoke and odors.6th stage is an Negative ... , Living room, Cookroom, Hospital, Etc..·Filters: Cotton filtering effect early, HEPA Filter, Activated Carbon and Photocatalytic.·UV: 254nm (20,000 Hour Life ...