How To Smoke A Vape Like A Pro 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. 4 Years Of Lung Damage From Vaping Resembles Chemical Burns, Report Says The New York Times For 2 Years Vaping increases the risk of lung disease by a third: U.S. study Reuters