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 In secondhand vape, scientists smell risk American Heart Association Secondhand e cigarette vape smoke exposure increased in last 4 years, contain harmful toxins: JAMA Network study ABC13 Houston Tobacco Smoke, Vaping, and Asthma AAFA.org Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN