The hidden threats of vaping and smoking on loved ones FMT Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London Second hand vape smoke linked to increase of risk of poor respiratory health Effect of second hand fumes from vaping on young lungs YouTube Secondhand smoke and secondhand aerosol