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).
colt 45 and two zig zags, baby thats all we need. We can go to the park after dark, smoke that tubleweed. And as the marijuana burnin we can take our turn, singing them dirty rap songs. Stop and hit the bong like cheech and chong and sell tapes from here to hong kong!