Smoking, vaping & pregnancy: in pictures Raising Children Network 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, Smoking during your partner's pregnancy Raising Children Network Flavored e cigarettes modulate embryo development, fetal growth, and potentiate early fetal demise without nicotine Communications Medicine Flavored e cigarettes modulate embryo development, fetal growth, and potentiate early fetal demise without nicotine Communications Medicine