wow funny i see this post. a few weeks ago i was blazing in my bathroom and i know that i would be alone for at least 4-5 hours. so i light the bowl and blow it out. i have no fucking idea how but it gets into the vents. my bro doesnt know i smoke, even tho i do it at least 3 times a day and live with him, and he was supposed to be out and everything too, but he came home for some shit and turned on the air.... in 5 minutes, it smelled like there was a fucking kickback in my house. he knew what was going on and what not. only reason i dont want him knowing is cuz he holds shit against me so if i get him mad, he "tells" or w.e, so i say, extremely faded, "ya, my friend came and did it while i was out geting lunch" haha he baught it and still thinks im clean. k later