sometimes me and my friends smoke out the window but the smoke usually just blows back in. (and we usually smoke blunts out the window which isnt that smart aha) so we put the fan on, open the windows and spray something. the room usually still smells for like an hour or two after, but every1 is sleeping anyway and no1 would come up till the nxt day.. by then its gone. any other ideas how to cover up the smell, besides the fan thing or incense. i've used a sploof but i can still smell a little bit of the weed in the room if i leave and then come back like 20 mins later. any odor elimintors that dont smell like anything? and where can i buy it