so heres the best set up ive had, so heres whta u need
1. Large box fan, like $10 at walmart
2. King size sheet
3. Febreeze for good measure
1. Now put the fan in your window and seal every other part (screen) best you can. Uusally a pillow above it w/ the blinds half way down works.
2. Put the sheet up somewhere between your door and window so it makes another room kinda.
3. DO NOT put a fuckin towel under the door like your gaper friends tell you too. This allows air to come in and make a wind tunnel kinda. You should be able to hold a lighter up almost anywhere in the room and itll blow in the direction of the fan.
Youll never ever get caught like that, you can smoke blunts and everything and it wont smell, you just gota blow your smoke towards the fan kinda, not into it but just knida towards it.
Now if you got the money, and a loft w/ a tv across from it under another loft and a couch do this. Put the fan and sheet up still. Now buy a bunch or beer bong tubing, like 1inch round. and buy a funnel and a couple T connectors. Put the funnel on the fan, then have tubing going from the window against the wall and shit to under the loft w/ the couch. Then make 2 foot long pieces of tubing. HAve the tubing come under the loft, use the two T's and have two spots for people to blow smoke into if they wanna cheef on the couch. Plug the end and voila. Extravagant i know, but my buddy had that in his room.