Vaping is when you inhale an e-cigarette. As opposed to smoking, vaping utilizes a Propylene Glycol or Vegetable Glycerin based liquid, mixed with small
amounts of nicotine and food grade flavoring that then get vaporized in a
small battery powered atomizer, simulating the experience of smoking.
The vapor created is inhaled and exhaled much like cigarette smoke, and like cigarette smoke, vaping is not proven 100% safe.