One of the major environmental concerns globally is air pollution, comprising both of indoor and outdoor pollution. The inhalation of the contaminated air contributes to many adverse health conditions such as cardiovascular and respiratory diseases that are the leading causes of mortality and morbidity. The chronic obstructive pulmonary disease (COPD) is among the conditions that are significantly aggravated by the exposure to air pollutants apart from cigarette smoke. COPD is a considerable public health burden globally and is one of the leading causes of deaths and morbidity across the developing and developed nations. About 65 million people across the globe have moderate-to-severe COPD (Liu et al., 2016).
The disease affects bot