Im ordering one of these for a customer I installed a new ac package in his mobile home and is having an odd smell throughout the whole place, the Mold Lady I use is down with Covid so she cant get there to do an air sample and send to a lab for testing till end of next week, Im thinking its a gray water smell but really not 100% sure, owner also has Asthma and waited 2 weeks to call me and hasnt called anyone else, he has a crew tearing out a fiberglass 2 pc shower enclosure no that yesterday I pointed out seam cracks and sitting water but the odor to me smells like a cross between dryer sheets and moth balls? I've never smelled anything like it so Im ordering this Ozone Generator for him (He doesnt have a computer or phone for online access) where I used to work in the 90's they had one very similar that we used for fire restoration when installing new ac systems in burnt dwellings, cant be in use when you're home though, he said great reason to go to the bar for a few hours lol