What are the respiratory effects of e cigarettes? The BMJ Did you know vaping and e cigarettes can lead to a condition called Popcorn Lung? Vaping may sound harmless, but it can seriously impact your breathing over time. Learn what causes it, how Outbreak of Lung Injury Associated with the Use of E Cigarette, or Vaping, Products Electronic Cigarettes Smoking & Tobacco Use CDC E cigarette and Vaping Associated Lung Injury (EVALI) EMOttawa Blog Vaping and Popcorn Lung: Separating Fact from Fiction Medic Pro