Chronic bronchitis, emphysema, and adult asthma may result from air pollution, smoking, and on-the-job exposure to substances that can damage the airways. Closed buildings and air-conditioning systems that recirculation air, as well as chemicals used in synthetic building materials and furnishings, may contribute to breathing problems. Pre-existing asthma may worsen due to exposure to pollutants. Dust may be an irritant, particularly for workers with other respiratory problems. Cigarette and cigar smoke interacts with other pollutants to increase the degree of damage. Dust from coal, grain, and cotton also cause respiratory ailments. Flour in the atmosphere of commercial bakeries too is a hazard for the employees.
Find out more about this book:Our Bodies, Ourselves: A New Edition for a New Era