Smelling mothballs for a long time has effects on pregnant women, mothballs contain toxicity, pregnant women should not smell mothballs for a long time during pregnancy. Smelling camphor pills in early and middle pregnancy can easily aggravate pregnancy vomiting and cause anemia during pregnancy due to vomiting for a long time, which can cause fetal malformation and miscarriage in serious cases, and smelling camphor pills in late pregnancy can easily lead to premature birth, and often smelling camphor pills can affect the fetus in the body and also affect the skin and respiratory tract of pregnant women. Pregnant women have higher requirements for various environments during pregnancy, any chemical odors, especially those containing toxicity, are not recommended to contact, so as not to affect the health of the fetus in the body. If you are normally exposed to harmful substances, it is recommended that you consider preparing for pregnancy after 6-12 months of separation from the working environment to avoid the effects of residues in your body on normal conception.