I must need new ones, then because I experimented and it doesn't set off mine. Vapor is cool--not smoke--so I don't see how it could unless there are smoke detectors that detect other things besides heat and smoke.
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Smoke detectors do not detect heat.
There are many tales on this and other forums of people vaping in airplane rest rooms and at work without any alarm triggering.
I have tried to set off my home smoke detectors by vaping directly into the device and no alarm was generated. When I smoked analogs I was successful in tripping the alarm. Vapor dissipates much faster than cig smoke.
IMO there is insufficent particulates in vapor to trip these alarms without serious effort.
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