Some substances that have been linked with COPD include:

Some substances that have been linked with COPD include : Grain and flour dust : Inhaling minute particles of grain and flour dust can make you vulnerable to COPD . Coal dust : Working in mines is an occupational hazard that may cause COPD . Welding Fumes : During the welding process , metallic oxides , silicates , and fluorides may be emitted . Silica Dust : Breathing in silica dust is one of the chronic obstructive pulmonary disease causes . Cadmium dust and fumes : Exposure to these fumes can be toxic as these gases can be harmful to the lungs , bones , and kidneys . . https://www.resmed.co.in/respiratory-care/copd/what-is-chronic-obstructive-pulmonary-disease