Our researchers are studying the effects of vaping on the lungs and airway. They found several components in e cigarettes damage cells that help protect us from viruses. Dr. Fariba Rezaee explains how Can vaping damage your lungs? What we do (and don't) know Harvard Health How to Vape Safely in 3 Easy Steps: Beginner Guide How Long Does Vape Smoke Stay in the Air? Is vaping safer than smoking? A pulmonologist weighs in.