Is Secondhand Vape Smoke Harmful Secondhand Vape Exposure: Effects, Who's At Risk, And More Australia Is Second Hand Vaping Dangerous Secondhand Vape Exposure: Effects, Who's at Risk, and More Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA Debunking 7 Myths About Secondhand Smoke Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN The Issues of Testing for Secondhand Smoke. Indoor Science