Second hand smoke is highly toxic. Here's what happens when pregnant women and their babies are exposed to second hand smoke. Kick It California Pregnant Parents 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 vape smoke linked to more asthma symptoms in kids Smoking and Pregnancy FAQs: Essential Answers for Moms to Be