i did that with the bottle and the dryer sheets. really works well but you need to remember to use a shit load of sheets. beyond that i had about everyone on my side of the dorm knock on my door before i started using the dryer sheets and say are you smokin in here. no one cared. i was still paranoid about it but really no one ever cared.oh one little tweak though i smoked h itters. you ghost that hitter throw it under your pillow. thats how its done.