in conjunction with my monster carbon scrubber and 8" 750cfm fan combo, I tossed in a very large and very expensive air purifier inside my tent for added "smell-be-gone" properties. the air purifier was over 400.00 and has 2 large heppa filters, one large carbon filter and a uvc filter. I had a city official over the other day to sign off on some electrical meter/panel work. NO issues. didn't even bat an eye in the direction of my grow room. and he was with in 4 feet of my flower room which is in week 3 of flower.