Experts show that flavored e cigarettes cause irreversible lung damage. A U.S. teen developed "popcorn lung" after secretly vaping for 3 years a permanent, life altering disease. Officially known as bronchiolitis obliterans, the 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. Do Geek Bars Have Diacetyl? EightVape Does Geek Bar Cause Popcorn Lung Syndrome Geek Bar Pulse Disposable Vapour Choice Edmonton Canada Australia What Causes Geek Bar Ingredients List Full Breakdown by Flavor (2026) VapeDeal.com