Chronic Obstructive Pulmonary Disease (COPD) is a common, preventable and treatable disease that is characterized by persistent respiratory symptoms and airflow limitation that is due to airway and/or alveolar abnormalities usually caused by significant exposure to noxious particles or gases.The main risk factor for COPD is tobacco smoking but other environmental exposures such as biomass fuel exposure and air pollution may contribute. Besides exposures, host factors predispose individuals to develop COPD. These include
genetic abnormalities, abnormal lung development and accelerated aging. Our case is a 34-year-old male patient with complaints of dispnea with exercise. No pathological findings were found on physical examination. There was no history of smoking. It was learned that the patient worked as a baker for a total of nine years in the occupational history. While working in the bakery, there was biomass exposure and grain dust exposure as indoor pollutants. A mild degree of obstruction was detected in the pulmonary function test. Bronchodilator reversibility response was negative.There was no abnormality on the chest X-ray and HRCT. The α-1 antitrypsin and cystic fibrosis sweat test levels were within normal limits, and the cystic fibrosis gene test was negative. Occupational COPD due to occupational biomass and grain dust exposure was considered in the patient who had no cigarette smoke and congenital causes.This case, which is currently working in the weapons industry but has been exposed to occupational COPD risk factors in the past, shows the importance of taking a detailed occupational history while taking an anamnesis.