Vaping During Pregnancy: Are e Cigarettes Safe for Baby? Nicotine products in any form, whether from cigarettes, vaping or chewing tobacco, pass into a mother's bloodstream and through the placenta to the growing baby. Quitting nicotine is hard for many people, Woman's Doctor: Is vaping during pregnancy dangerous? Electronic cigarettes and vaping Tommy's 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