To prevent the spread of aerosols, buildings need to open more windows for ventilation, insist on cleaning the floor and insist on disinfection. 1. Open windows more often for ventilation: open windows often for ventilation to ensure that the air in the hallway is smooth, avoid closing the windows tightly, otherwise the virus may have been gathered indoors, easy to cause aerosol transmission. 2. Insist on cleaning the floor: Every day, you should insist on using a mop to clean the hallway, and clean up the residue in the hallway. 3. Insist on disinfection: clean up and then regularly disinfect the hallway, you can use special disinfectant solution, such as sodium chlorate-based high-efficiency disinfectant, can effectively kill bacteria. The balcony of the building or window railings, etc., can be wiped with disinfectant. In order to prevent the spread of aerosols, the building can be treated in the above way, which can reduce the spread of aerosols. However, try to wear a mask when you go out, go to fewer crowded places, wash your hands and disinfect them diligently when you get home, and consult your doctor in time if you have any uncomfortable reaction.