The smell of paint can affect the human body and the fetus, but there is no specific data on how long pregnant women can smell the smell of paint can cause malformation. Paint contains more chemicals, including formaldehyde and benzene substances have a greater harm to the human body, smelling paint for a long time will cause chronic benzene poisoning, blood diseases, etc.. Short-term exposure does not generally have an impact on the fetus. But early pregnancy, especially in the first trimester, the fetus has not yet formed, then if pregnant women smell paint, exposure to paint for a long time, the teratogenic rate will be significantly higher. In addition, long-term exposure to paint in the middle and late stages of pregnancy may affect the blood circulation of the placenta, thus affecting the health of the fetus. In conclusion, women should avoid exposure to harmful substances during pregnancy, eat more fresh vegetables and maintain a healthy lifestyle. If you accidentally smell paint, it is recommended to drink more water, eat more, speed up your metabolism and breathe fresh air in an open area. If you experience dizziness, nausea and vomiting and other uncomfortable symptoms, go to the obstetrics department of the hospital in time.