Not just water vapor: why e cigarettes are so dangerous PUBLIC HEALTH INSIDER Pediatric Environmental Health Center E Cigarettes Boston Children's Hospital Do you know what's in a vape? Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center E cigarettes and Vaping Commercial Tobacco Use MN Dept. of Health Vaping is often marketed as harmless. Flavoured. Trendy. Safer than smoking. But the reality is far more serious, especially for children and teens. When kids vape, they are inhaling addictive nicotine and