Pregnant parents told vaping doesn't harm unborn babies The Independent E cigs and vapes Right Decisions Did you know? Smoking or vaping during pregnancy can harm both mom and baby. Increases risk of premature birth Raises chances of low birth weight Can affect brain 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.. Smoking during pregnancy March of Dimes