Vaping really is THAT bad @LungAssociation says vaping isn't just inhaling harmless water vapor. Liquid in vapes often holds harmful drugs & chemicals, like nicotine, propylene glycol (found in antifreeze), carcinogens, acrolein ( Does Vaping Cause Lung Cancer? Myths and Facts OncoDaily Evidence Indicates Vaping Wreaks Havoc on the Oral Cavity Dimensions of Dental Hygiene Vaping is often seen as a less harmful alternative to smoking, but since it is still relatively new, there is no way to study the long term effects. Both vaping and smoking irritate Scientists Warn: Vaping Likely Causes Cancer