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 Woman's Doctor: Is vaping during pregnancy dangerous? 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, Study shows vaping nicotine while pregnant may impact fetal development