Do Vapes Set Off Smoke Alarms? Royal Flush Vape UK But There's No Smoke Can Vaping Set Off Smoke Alarms? Vapemate Temasek Poly catches students vaping during trial of detectors; schools show interest in devices The Straits Times 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