84 disinfectant may cause some harm to infants if not used properly. The main ingredient of 84 disinfectant is sodium hypochlorite, which contains a high concentration of chlorine gas, with a certain degree of irritation and corrosiveness, mainly used for environmental and object surface disinfection, such as volatilization process by the infant inhalation, may irritate the respiratory mucous membranes, causing choking, allergic rhinitis, etc., and in serious cases, it will also hurt the infant’s trachea. After disinfecting with 84 disinfectant due to the high concentration of disinfectant in the room, it is usually necessary to open the window and ventilate the room for 1~2 hours, and after the floor is completely evaporated, then let the infant enter. If an infant experiences any abnormality or discomfort after disinfecting the room with 84 disinfectant, it is recommended to seek medical attention promptly.