Do Vapes Go Off in Metal Detectors? Can Vapes Set Off Fire Alarms? Juicemate How Do Smoke Detectors Detect Vape Can Hotels Detect Vape Smoke Can Smoke Detectors Detect Vape Can a Vape Set Off a Fire Alarm? What To Know 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