Can Vape Trigger Smoke Alarm 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 Can Vape Trigger Smoke Alarm Does Vaping Set Off Smoke Alarms? What You Need to Know Can Vape Pens Trigger Smoke Alarms in Buildings or Planes? How to handle guests who break house rules and smoke in the house?