Do hotels have THC detectors? ANKA Can You Vape in Hotel Rooms? Policies & Smarter Alternatives Vape Detector vs. Smoke Detector: Comparison & How They Work Does anyone know if Vape smoke will set off this hotel fire alarm? : r Vaping 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. 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.