Can Vaping Set Off a Smoke Alarm? Here's What You Need to Know Can a Vape Set Off a Fire Alarm? What You Should Know Detect Vape On A Plane Understanding How Electronic Cigarettes Can Affect Smoke Detectors Australia Alarms Reddit Aircraft Lavatory Smoke Detector Facts Smoking or vaping is not allowed on any flight to or from the United States. You can carry an e cig in your hand luggage, but you cannot use it in the cabin.