Secondhand Smoke Vermont Department of Health 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. How can I protect my child from thirdhand smoke in cars? Thirdhand Smoke Resource Center Children to be better protected from second hand smoking and vaping GOV.UK What Is Secondhand Smoke? Healthy Delaware