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, Flavored e cigarettes modulate embryo development, fetal growth, and potentiate early fetal demise without nicotine Communications Medicine Vaping during pregnancy harms offspring even without nicotine, study finds Oncology Central Women should give up vaping if they want to get pregnant, study suggests Vaping The Guardian