Is passive vaping a hidden risk to the public? Here's what the experts know so far ABC News Second Hand Vaping Vape Smoke Free Tobacco Smoke, Vaping, and Asthma AAFA.org Passive vaping time we see it like secondhand smoke and stand up for the right to clean air Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN