Yeah, I don't understand why your asking how long the smell would last if you hotbox your room?Cuz if you hotbox your room, you WANT it to smell like weed for a while. Even if you smoked enough bud to do this (with a small room), your whole house would eventualy smell like heaven. And if you are doing it with an open window, a spray of febreeze or axe should do it. (Smoke in my bathroom all the time). And doob tubes work great! I got stoned after 2nd block, and no one even noticed (the bathroom).

later