Juul study shows secondhand vaping emissions are less toxic than cigarette smoke Study suggests switching from smoking to vaping indoors may reduce children's secondhand exposure to nicotine 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. Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA