Do You Inhale Vape Or Keep It In Your Mouth How to Inhale a Vape: A How to Hit a Pen Perfectly Your First Time MTL vs DTL Vape: What's the Real Difference and Which Is Better? Tastefog Vaping refers to the act of inhaling and exhaling aerosol, often called vapor, produced by an electronic cigarette or similar device. These devices heat a liquid that usually contains nicotine, flavorings, and