How Do Vape Detectors Work? [Answered 2026] Flight attendant explains what really happens if you smoke or vape on a plane 7NEWS 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 You Bring a Vape on a Plane Under 21 BOOST! Can Hotel Smoke Detectors Detect Vape Can Hotels Detect Vape Smoke Rest