The hazard after 5 hours of inhalation of 84 disinfectant depends mainly on whether it is gas inhalation through the mouth and nose, or liquid intake through the mouth. 84 disinfectant is volatile and produces an irritating odor. 5 hours after inhalation may produce symptoms such as sore throat, cough, chest tightness, and a slight burning sensation in the airway, which generally do not reach a toxic dose and are not life-threatening. However, if misuse of 84 disinfectant occurs and is ingested through the digestive tract, as 84 disinfectant is a strong corrosive chemical, it may cause bleeding in the digestive tract and even perforation of the digestive tract, which may cause liver and kidney failure, respiratory failure, etc., and even cause death. If you experience respiratory symptoms after being irritated by the smell of 84 disinfectant, you need to move immediately to a place with fresh air and circulation. In case of inhalation through the digestive tract, call 120 immediately or send the accidental inhaler to the emergency department of a nearby hospital for emergency treatment.