How Do Smoke Detectors Detect Vape Marijuana and THC Detector Do Hotels Have Vape Detectors? Nexlar Security False positives in vape detectors are a common concern, particularly when the devices are placed in environments with factors that can mimic vaping aerosols., , Common causes include:, Aerosols Can Vaping Set Off Smoke Alarms? EDGE Vaping Cigarette Smoke Detector Vape detector in my room, what do I do? : r trees