Young Adults Who Vape Cannabis Are More Likely To Experience Cough, Bronchitis And Wheezing, Study Finds CBS Baltimore Popcorn lung: Causes, symptoms, and treatment Vape mouthpieces could be swarming with fungi that harm airways New Scientist Second hand nicotine vaping exposure raises risk for bronchitis, breathing problems UPI.com Acute Bronchitis Harvard Health The Mysterious Vaping Illness That's 'Becoming an Epidemic' The New York Times