Flavored e cigarettes are causing permanent lung damage. E cigarettes heat liquid chemicals into an aerosol designed to be inhaled deeply. That delivery method matters. Like a medical nebulizer, vaping efficiently carries substances straight E cigarette induced lung disease: from acute to chronic The Lancet As e cigarette use grows, more research needed on long term effects of vaping American Heart Association Global youth vaping and respiratory health: epidemiology, interventions, and policies npj Primary Care Respiratory Medicine Popcorn Lung (Bronchiolitis Obliterans): Causes & Treatment