E Cigarettes (Vapes) Smoking and Tobacco Use CDC Asthma and Allergy Foundation Tobacco can be bad for your health even if you are not the one smoking. Breathing in the smoke can lead to many health problems. Vaping is Effect of second hand fumes from vaping on young lungs Truth Initiative Secondhand smoke is classified as a Group A carcinogen, a substance known to cause #cancer in humans and animals. Learn more at the link in Instagram