Don't smoke or use nicotine during pregnancy or after your baby is born. Safe Sleep NC Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC 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. Secondhand Smoke Is a Risk for Pregnant and Breastfeeding Moms The Wellness Coalition Can Vaping Cause A Miscarriage Study To Take A First Look At Vaping And Pregnancy Matchless E Cig UK Mothers Who Vaped During Pregnancy