Millions of people are exposed to secondhand smoke every day. People living in multi unit housing are some of the most exposed. The only way to fully protect people from secondhand smoke at Secondhand smoke from vaping could be harmful to children: study ABC13 Houston Health experts say not to 'vape' around children, because the secondhand aerosol (it isn't vapor) from e cigs isn't safe for them Kentucky Health News Is Second Hand Vape Smoke Bad For You? Learn How to Avoid its Side Effects Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Tobacco Smoke, Vaping, and Asthma AAFA.org