Eliminating Tobacco Use in Washington Kids American Heart Association E cigarette flavors are toxic to white blood cells, warn scientists Why Isn't More Known About the Harmful Nature of Vaping? Pittman, Roberts & Welsh, PLLC 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. Is vaping safer than smoking? Dr Colin Mendelsohn