Yes, vaping is toxic and the consequences can be permanent. A U.S. teenager developed popcorn lung a life altering, incurable condition after secretly vaping flavored e cigarettes for E CIGARETTE OR VAPING PRODUCT USE ASSOCIATED LUNG INJURY BEYOND YOUTH: A CASE OF RAPID ONSET RESPIRATORY FAILURE IN AN OLDER FEMALE SHM Abstracts Society of Hospital Medicine A Lung Doctor Takes On E Cigarettes A woman has developed rare form of lung metal scarring from vaping Clinical and radiological characteristics of e cigarette or vaping product use associated lung injury Emergency Radiology Springer Nature Link