Will Vaping Set Off Fire Alarms? 2026 Safety Guide E Cigarette Direct Your guests aren't the only ones checking in. So are their vape pens. With over 13 million regular vapers in the U.S. alone, unauthorized vaping is a major operational risk for hotels. The smoke detector in my hotel room is over it Do hotels have THC detectors? ANKA Will Vaping Set Off Hotel Smoke Alarms? Can hotels detect vaping in rooms?