Inherited traits from parents aren’t just passed out in random fashion. Inherited traits are passed through the genes of parents to their children. Some traits are passed on only through the mother or only through the father.

Mucus plug, the excessive secretion of slippery substance produced by the cells lining the airways of the lungs, is a result of various respiratory conditions that exhibit mucus hypersecretion.

Various medical conditions such as bronchitis or cystic fibrosis may cause mucus to collect in the lungs. Congestion in the lungs may cause symptoms such as coughing and pain in the chest. The symptoms may become bothersome medications and treatments may help relieve congestion in the lungs.