Chronic Obstructive Pulmonary (or Respiratory) Disease, shortened to COPD or CORD.
Basically this is an illness which makes breathing difficult and is almost always caused by smoking, there is no cure but there is symptom relief. There are a variety of treatments. See this link for a full explanation. https://www.healthnavigator.org.nz/health-a-z/c/chronic-obstructive-pulmonary-disease/