Do Vapes Set Off Smoke Alarms? Royal Flush Vape UK Can Vaping Devices Set Off Smoke Alarms? American Airline flight attendants found a man vaping in the bathroom. He posted a video of what came next. 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. Can Airplane Smoke Detectors Detect Vape (in 2024) ? Vape Detector