Second Hand Vape Smoke Pregnancy The Effects of Smoking While Pregnant AND Resources to Quit Is Second Hand Vaping Harmful? EDGE Vaping Study finds vaping in pregnancy harms both mothers and babies 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. Vape residue may harm unborn babies, mouse study suggests Is vaping safer than smoking when you're pregnant? Experts weigh in BabyCenter