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. A viral simulation comparing the effects of smoking and vaping has reignited debate over the long term health risks of both habits. The demonstration visually shows how cigarette smoke leaves thick tar buildup Should I Be Concerned About Secondhand Vaping? Vaping vs. Smoking: Is One Really Safer Than the Other?