The most common cause of chronic bronchitis is cigarette smoking. Do you smoke? If yes, then you should stop immediately. However, it can also be the result of continuous attacks of acute bronchitis. Air pollution, dust, toxic gases, and other industrial fumes are also known to be responsible for the condition. For acute bronchitis, it is usually caused by a viral infection in the bronchi. In addition to viruses, bacteria, exposure to tobacco smoke, exposure to pollutants or solvents, and gastroesophageal reflux disease (GERD) can also cause acute bronchitis. You need to reflect on these causes and identify the factor that you should modify.