Detector Reddit How Do Hotels Know If You Vape? A Comprehensive Guide Hotel Chantelle Can Hotels Detect Vape Smoke Australia Why would someone put a plastic bag over the smoke detector in a hotel 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. Will Vaping Set Off Hotel Smoke Alarms?