when it was im my closet all that i could smell in the room was a kind of full-bodied musky lemon skunk smell. i find it works best out side the grow room and it MUST have a fan goin on it. u dont need a fan blowing into it, but what u can do is shake the pot every day with teh lid on (obviously) so that the liquid covers the top gel, and put an oscilating fan on so that it only blows over the top of the ona gel once every like 5 seconds or whatever. it just makes it last a bit longer. u really need to shake the pot every day or at least every 2 days to keep the fresh smell coming off it properly. it works well for me !