Smokers Switching to Vaping See Improved Respiratory Health Respiratory Therapy The evidence is clear: Young E cigarette users suffer from respiratory symptoms American Lung Association Vaping in the UK: A Comprehensive Analysis of its Impact on Respiratory Health Woodley BioReg 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 Adolescent e cigarette use tied to breathing problems Fox News Use of e cigarettes plus tobacco cigarettes linked to higher risk of respiratory symptoms