Vaping releases toxic chemicals, including heavy metals, as well as ultrafine particles that go deep into the lungs. These increase the risk of heart and lung disorders. Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center 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 you know what's in a vape? Pediatric Environmental Health Center E Cigarettes Boston Children's Hospital