Do Vapes Set Off Smoke Alarms? [Clear Answer] Grey Haze UK Can Vaping Really Set Off Smoke Alarms? The Truth Revealed 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. Do Vapes Set Off Fire Alarms in Homes Hotels and Planes I was reading a post from about a year ago. About the legitimacy of hotels having silent vape alarms. Well I just found one in my hotel. Discreetly attached to the back