Nicotine Vapes: the Chemicals They Contain, What They Can Do to You Business Insider Massachusetts new vaping campaign done with student input masslive.com High concentrations of flavor chemicals are present in electronic cigarette refill fluids Scientific Reports 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. Avoiding Tobacco Smoke and E Cigarette Aerosol Is a Key Part of Asthma Management Asthma and Allergy Foundation of America Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center