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. Second hand smoke is highly toxic. Here's what happens when pregnant women and their babies are exposed to second hand smoke. Secondhand Smoke Is a Risk for Pregnant and Breastfeeding Moms The Wellness Coalition Kick It California Pregnant Parents 4 myths about vaping and pregnancy busted Your Pregnancy Matters UT Southwestern Medical Center