How long does vape smoke stay in the air? Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Travel tip: Vapes must be packed in your carry on bag. Keep them there while traveling through airports and on the plane. The only clouds you should be chasing are the ones your Can you vape on a plane? E cigarettes travel rules and laws explained How Long Vape Smoke Remains in the Air Vaping Produces Far Less Second Hand Nicotine Than Smoking Respiratory Therapy