Does vaping cause lung cancer? UT MD Anderson No, Vaping Doesn't Cause Popcorn Lung Let's Set the Record Straight Do Geek Bars Have Diacetyl? EightVape Are Geek Bars Safe: A Look At Disposable Vapes And Vaping Risks 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.