Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA ASHES, Vol. 14(9) What's in that vape? Sending health warning messages by text BASIS (The Brief Addiction Science Information Source) Analysis suggests e cigarette use may be linked to lower rates of smoking New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking Youth Know the Risks 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.