The dangers of vaping Baylor College of Medicine Blog Network Secondhand smoke and aerosol What Does Vaping Do to Your Lungs? Johns Hopkins Medicine 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. Vaping: The Small Habit That Hits Harder Than You Think Maryland Physicians Care Avoiding Tobacco Smoke and E Cigarette Aerosol Is a Key Part of Asthma Management Asthma and Allergy Foundation of America