During pregnancy, a woman’s sense of smell often becomes much stronger due to rising hormone levels, especially estrogen. This heightened sensitivity, known as hyperosmia, can make ordinary scents like food, perfume, or cleaning products feel unusually intense. It is one of the body’s natural changes that helps protect both mother and baby. This sharper sense of smell can sometimes trigger nausea or vomiting, particularly in the first trimester. Certain odors that were once tolerable may suddenl