Vaping is often marketed as a safer alternative to smoking, but many vape products contain nicotine, harmful chemicals, and heavy metals that can harm developing brains and lungs. Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Chemicals Pediatric Environmental Health Center E Cigarettes Boston Children's Hospital 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