Long-term smell 84 disinfectant is harmful to the human body, such as may cause slight pain in the skin and mucous membranes, breathing problems, and in severe cases may also occur bronchitis. 1. Slight pain in the skin and mucous membranes: Because 84 disinfectant has a strong irritant, if long-term smell, may be irritated skin and mucous membranes, can also be accompanied by a slight pain. 2. Breathlessness: 84 disinfectant is easy to evaporate into chlorine, and chlorine is a harmful gas, may cause breathlessness, serious bronchitis, pneumonia and so on. And 84 disinfectant is not easy to evaporate after use, easy to remain in the environment or water resources, if long-term contact with the relevant environment will cause some harm to the body. It can be seen that it is best not to smell or use 84 disinfectant for a long time, which will cause some harm to the body.