Do you know what's in a vape? Vaping exposes user to harmful levels of particulate matter, study suggests CUNY Graduate School of Public Health & Health Policy Composition of electronic cigarette aerosol Wikipedia Vaping, even just once, can have devastating consequences, according to renowned heart surgeon, @drjeremylondon., After performing thousands of heart surgeries, Dr. London has seen what wrecks the Juul, SMOK, elfbar: The real problem with vaping e cigarettes Vox Troubleshooting Tips for Dry and Burnt Hits