just take a towel and put it under the door, spray it with fabreeze or something for good measure. the paper towel roll with dryer sheets is also a god send. the smoke detector won't go off unless you stand on a chair and hold the joint right to it and blow into it. if ur really worried just take the batteries out. now when i used to live with my folks i would crawl out the window and sit on the garage roof amd smoke. it was really nice, i could lay and stare at the stars getting high. didn't work during the winter tho, ice and stuff i'd slide off the roof. plus you know, it was cold hahaha.