Mercury is mercury, itself is a liquid substance, but it has a certain volatility, so if exposed to the air is easy to be inhaled by the crowd into the airway and lead to some harm. If excessive inhalation of mercury into the airway, will lead to different degrees of airway mucous membrane congestion, edema, and even a large amount of inflammatory secretions exuded, resulting in inhalation of the respiratory system inflammatory response, can cause non-infectious pneumonia, bronchitis, etc.. As the airway mucosa is stimulated by mercury, it is likely to rupture when it is severely damaged, leading to bacterial infection and bacterial bronchitis and pneumonia, with obvious coughing, coughing up pus, chest pain, chest tightness, and even a tendency of gradually and continuously increasing body temperature.