The risk of asthma goes up several times among children whose mothers smoked during pregnancy. The prenatal exposure was found to be connected with daily and night-time asthma symptoms in kids. This exposure in the prenatal stage also caused many asthma-associated emergency room visits. Previous research has also shown the link between smoking during pregnancy and asthma. Despite this, the researchers are still to ascertain how prenatal exposure affects the child's lungs even though the foetus is not inhaling the smoke.