J68: Respiratory conditions due to inhalation of chemicals, gases, fumes and vapours

J68.3: Other acute and subacute respiratory conditions due to chemicals, gases, fumes and vapours

When we breathe, the air gets into the body via the respiratory tract. The respiratory tract can be divided into the upper and the lower respiratory tracts. The nose and throat form part of the upper respiratory tract. The lower respiratory tract begins at the larynx. This includes the trachea and the bronchia. The bronchial tubes pass through the lungs and continuously branch out in the process. The bronchial tubes end in the pulmonary alveoli. Oxygen from the air passes into our blood in the pulmonary alveoli (air sacs). These blood vessels extend to the heart. The heart subsequently pumps the blood with the oxygen into the body.

You have inhaled substances, vapors or smoke. As a result, your airways or lungs were irritated. You have a disease in your airways or lungs as a result.