Do Vapes Set Off Smoke Alarms Can Vapor Set Off a Smoke Alarm? What to Know A pair of hackers found that a vape detector often found in high school bathrooms contained microphonesand security weaknesses that could allow someone to turn it into a secret listening device. Can a Vape Set Off a Fire Alarm? What You Should Know Do Vapes Set Off Hotel Smoke Alarms Can hotels detect vaping in rooms? 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