most smoke alarms work on a small amount of decaying radiactive medium. it emits particles which are picked up my a sensor, this allows the circuit to break and so triggers the alarm. normal smoke from a fire is dense and so the circuit is broken. cigarette smoke isn't that dense but cannabis smoke is more so. its likely at your college they aren't that sensitive. they know that people are gonna smoke and so dont want to have em too sensitive.

when i was at uni my smoke alarm wasn't even a smoke alarm, it was a heat alarm. it didnt go off, even when i made a smoke bomb and set it off in my mates room when he was asleep. it did however go off when i held a lighter underneathe it.

upshot. check if it aint a true smoke alarm you got nothin to worry about. becareful if you disconnect it though cus you mite need it if you are smokeing adn then might check.
you could however replace it with a dead battery. that way it willl never go off.

peace
snowblind Reviewed by snowblind on . How sensitive are smoke detectors? Now that im in college, i have to worry about smoking around smoke detectors. I just now smoked in the bathroom with the shower running hot water, and i taped a bag around what could be a smoke detector in the bathroom. There are also two smoke detectors in the hall outside the bathroom that i didnt tape up, but i put a towel underneath the door so that no smoke could get outside the door. So what im asking is, is this a safe spot? Exactly how sensitive is a smoke detector and how much smoke Rating: 5