Vaping is officially deadly. A life altering diagnosis of 'popcorn lung' in a U.S. teenager is sounding the alarm on the hidden dangers of flavored e cigarettes. A U.S. teenager's secret three year vaping habit Vaping isn't just a bad habit it can seriously harm your lungs and your overall health. According to the American Lung Association, the chemicals in vape aerosol can inflame and scar Vaping for just 12 months left woman, 22, with crusty herpes like ulcers so painful she couldn't eat or drink E cigarette burns and explosions: How common are vape pen injuries?