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, A TikToker went viral for saying she won't quit vaping while pregnant. The CDC says nicotine products are unsafe for pregnancy. Electronic cigarettes and vaping Tommy's Vaping more effective than patches for pregnant women, study finds Dr Colin Mendelsohn