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 Vaping delivers heated chemicals directly into the lungs. Unlike air, vape aerosols contain fine particles, nicotine, heavy metals, and flavoring compounds that were never designed to be inhaled. Once inside the chest, How to Inhale a Vape Correctly: Beginner's Guide 2026 How to Blow Smoke Out of Your Nose: 9 Steps (with Pictures) Smoke and Mirrors: The Myth of Healthy Vaping University of Utah Health