Vaping before, during and after pregnancy: leaflets and infographics ASH 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, Do you know that vaping or E cigarettes are hazardous during pregnancy as it can affect fetal development. If you are pregnant or trying to become pregnant, you should be aware about the Electronic cigarettes versus nicotine patches for smoking cessation in pregnancy: a randomized controlled trial Nature Medicine