Vaping VAPI Maimonides Emergency Medicine Residency Most common e cig refills contain respiratory irritants, and people who smoke and use e cigs are more likely to experience respiratory symptoms ERS European Respiratory Society E cigarette use and respiratory symptoms in adults: A systematic review and meta analysis Outbreak of Lung Injury Associated with the Use of E Cigarette, or Vaping, Products Champlain Medical The truth about e cigarettes IQAir International Older e cigarette users face increased odds of respiratory issues, study finds