Pregnant women should not smell 84 disinfectant, the disinfectant is very irritating and contains chlorine as the main ingredient, which can be irritating to the human respiratory mucosa, leading to skin redness and mucosal edema. Pregnant women are of special constitution and should stay away from such irritating smelling disinfectants. Clinically, large objects such as floors and toilets can be disinfected with 84 disinfectant. Washing with water after disinfection can reduce the smell, while opening windows and changing the air is also conducive to disinfection and the disappearance of irritating odors in the air. Pregnant women should stay away from the disinfectant immediately if they have panic attacks and chest tightness after smelling the 84 disinfectant, and take appropriate oxygen and rest for adjustment. A small amount of irritation is not harmful, but should be prevented.