It's official. Flavored e cigarettes cause permanent lung damage. And doctors are already seeing it happen. In the United States, a teenager developed something called popcorn lung after secretly vaping for three years. The Safety of Geek Bar Pulse X Vapes: A Comprehensive Analysis Vape Papa No, Vaping Doesn't Cause Popcorn Lung Let's Set the Record Straight Popcorn Lung: The Zombie Vaping Myth That Refuses to Die Does Diacetyl in Vaping Cause Popcorn Lung? Clutch Vape 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