Vaping more effective than patches for pregnant women, study finds Dr Colin Mendelsohn Many people think vaping is a safer option during pregnancy. But both smoking and vaping can affect a baby's oxygen, growth, and development. Here are some risks every expecting parent should know.. Many people think vaping is a safer option during pregnancy. But both smoking and vaping can affect a baby's oxygen, growth, and development. Here are some risks every expecting parent should know.. The Real Risks of Vaping While Pregnant