Health officials investigating dangers of vaping, verifying danger Flavored e cigarettes are not harmless. Doctors are now seeing teens with permanent lung damage from vaping. In the U.S., a teenager developed popcorn lung after vaping in secret for three years. This Popcorn lung: how vaping could scar your lungs for life Vaping harms your health Cancer Institute NSW It's a Fact. Vaping Can Cause Popcorn Lung Poster ToucanEd Popcorn Lung and Vaping: Debunking the Myths Asia Harm Reduction Alliance