CODP (Chronic Obstructive Pulmonary Disease) is a disease by which breathing becomes very difficult without assistance from an oxygen tank once the disease has progressed and will eventually kill you!  It is well know that smoking is a major culprit behind COPD.  The smoke causes and creates permanent damage to the lungs air-sacs.  There are other inhaled elements that can put you at risk.  1) Chemical Fumes.  2)  Dust 3) Air Pollution 4) Second hand