Can Vape Pens Trigger Smoke Alarms in Buildings or Planes? Do Vapes Set Off Smoke Alarms? Royal Flush Vape UK Can Vaping Set Off A Smoke Detector? FirefighterNow Can Vape Trigger Smoke Alarm Does Vaping Set Off Smoke Alarms? What You Need to Know How Do Vape Detectors Work? (2025 update) Think vapes are harmless to your smoke alarms? Not always. Vapor clouds from ecigarettes can drift into smoke alarms and trigger false alarms, especially in smaller rooms. Even lighter vapes can