Children at risk: Emory study uncovers the hidden dangers of secondhand vape exposure Health effects of electronic cigarettes Wikipedia The Dangers of Secondhand & Thirdhand Smoke Exposure Secondhand Vape Exposure: Effects, Who's at Risk, and More Sleeping baby safety tip: Keep baby's environment smoke and vape free. Secondhand smoke in areas where a baby sleeps or spends time, like home or the car, increases the risk of health problems.