Popcorn Lung: A Dangerous Risk of Flavored E Cigarettes American Lung Association Diacetyl In Vape Juice The Difference Between UK & USA Vape Juice UK When Was Supreme Court upholds FDA decision banning flavored vapes POLITICO 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.