Yea it should be gone by friday unless you really cheech out your parents house... if you still to paranoid about it you can whip up a doobtube using a cardboard towel or toilet paper roll and stuff about 4-6 sheets of bounce fabric softener or whatever softener you have.. it works great, its what I use and my parents are watching tv on the other side of the wall lol by the way it doesn't work well with joints or blunts