Should I Be Concerned About Secondhand Vaping? Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA Secondhand Smoke and Secondhand Vaping: Both Bad for Kids University Hospitals Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Secondhand vape exposure: Risks and side effects Secondhand Vape Plumes Could Form Lung damaging Radicals