Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Passive vaping time we see it like secondhand smoke and stand up for the right to clean air Health: In secondhand vape, scientists smell risk Journal Courier E Cigs and Second Hand Vaping: Dangers and Protections Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London