 Chronic obstructive pulmonary disease, copped, is characterized by excessive production of mucus in the lungs. Mucus is produced by special cells called goblet cells which are found in the respiratory tract. The mucus helps protect the lungs from inhaled particles and microbes. However, when copped is present, the mucus becomes thicker and stickier, leading to difficulty breathing and increased risk of infection. There are several treatments available for copped, such as drugs, oxygen therapy, and surgery. Non-drug treatments include physical exercise, acupuncture, and herbal remedies. Additionally, mu research has shown promising using gene therapies to reduce mucus production. This article was authored by Benay Kumar Shah, Bivik Singh, Youkuan Wang, and others.