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 Experts say that flavored e cigarettes can 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, How Many Puffs Is A Vuse Pod MissJophiel Strapless Corset Butterfly Tulle Midi Dress Other Above Vaping: Get the Facts. Protect Your Future Anne Arundel County Health Department Popcorn lung: The serious and irreversible disease linked to vaping The Independent