Experts warn that flavored e cigarettes can cause irreversible lung damage, as seen in a U.S. teenager who developed "popcorn lung"a severe and permanent condition called bronchiolitis obliteransafter secretly vaping for three years. E cigarette, or Vaping Product, Use Associated Lung Injury (EVALI) Fact Sheets Yale Medicine Study: E Cigs Linked to Dangerous Lung Disease Salud America Manuel d'utilisation de la tondeuse cheveux professionnelle Oraimo Smart Clipper 2 OTR 210