Pregnant women are advised not to smell alcohol. Alcohol is an organic solvent that can enter the body through the skin, or through the respiratory tract, and thus be incorporated into the bloodstream. The early stage of pregnancy, especially the first trimester, is a critical period for the development of the fetal nervous system. Alcohol entering the fetus can cause malformations in the development of the neural tube, or lead to anencephaly or cerebral fissures. This is also the reason why many alcoholics are seen to give birth to children with a high rate of malformations, or a high rate of malformed babies. It is recommended that pregnant women, especially those in early pregnancy, try not to be exposed to alcohol, which still has a high impact on the fetus. Inhalation of alcohol gas can be avoided as much as possible, as alcohol can also be incorporated into the bloodstream through the alveoli. If you see alcohol, you should wear a mask and protective gear and get out of the environment containing alcohol as soon as possible.