For Vapers, Frightening Health Consequences Are Quickly Emerging E cigarettes disrupt lung function and raise risk of infection 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. Our researchers are studying the effects of vaping on the lungs and airway., They found several components in e cigarettes damage cells that help protect us from viruses. , Dr. Fariba Rezaee explains