Background: In recent years, concern has arisen worldwide about the potential adverse effects that could result from early-life exposure to pesticides. Asthma, bronchitis, and persistent cough in children have been linked to gestational exposure to pesticides. The respiratory effects of gestational exposure to pesticides are controversial. The aim of this study was to determine the relationship between pesticide exposure in pregnant women and its effect on the respiratory system of their children. Methods: A narrative review was carried out by means of a search in the main databases. Results: Findings of studies confirmed the effects of pesticides on the child’s health. These substances cross the placenta and become transmitters of exposure to the individual at the most sensitive stage of her development. Conclusions: Chronic exposure to pesticides in fetuses is associated with chronic respiratory symptoms and disease.