Exposure to secondhand vaping fumes among teens raises concerns UPI.com The FDA's Juul Ban May Not be a Pure Public Health Triumph Vaping isn't harmless. While e cigarettes don't contain tobacco, nicotine is highly addictive and can harm brain development. E cigarettes can cause EVALIa serious lung injury linked to vaping. Symptoms like cough, chest Second Hand Vaping Vape Smoke Free E Cigarettes Vaping with Juul & Other Electronic Cigarettes