Once inhaled to the soot bronchial uncomfortable may be physiological factors, but may also be bronchitis, bronchial asthma and other diseases. 1. Physiological factors: some people due to individual differences in the bronchial more sensitive to soot or more resistant to soot, when the bronchial inhalation of soot may be self-conscious uncomfortable, there may be coughing, nausea, dyspnea and other symptoms. 2. Bronchitis: Bronchitis is an inflammation of the trachea, bronchial mucosa and surrounding tissues caused by a variety of factors, generally high sensitivity, when inhaling soot may cause irritation of the local mucosa of the bronchial tubes, resulting in bronchitis attacks, nausea, cough and other uncomfortable symptoms. 3. Bronchial asthma: bronchial asthma is a heterogeneous disease characterized by chronic airway inflammation and airway hyperresponsiveness, due to the presence of airway hyperresponsiveness, when inhaling soot will stimulate the bronchial spasm, shortness of breath, chest tightness, coughing, dyspnea and other symptoms. As soon as the inhalation of soot on the bronchial discomfort of the crowd, daily should minimize or avoid contact with soot, if the discomfort is serious, it is recommended that timely medical treatment, by the doctor to improve the relevant examination to clarify the cause of the disease, and targeted treatment.