We are currently in the phase of a new coronavirus pneumonia epidemic. In the home environment, it is not necessary to wear a mask at all times if family members have not traveled to an area where the disease is endemic, there is no obvious discomfort such as fever, they do not go out frequently, and only people with close family ties are together. There is no need to worry too much about aerosol transmission. Aerosol transmission is only possible when there are many patients and there is a possibility of aerosol infection in the whole house. In general, the main routes of viral infection are droplet transmission and contact transmission. It is important to wash your hands frequently when isolating yourself at home. Especially after returning from a trip, be sure to wash your hands and ventilate your home to minimize the chance of spreading the virus. The presence of aerosols in the home is minimal, and if present, ventilation can improve the situation. Content source: Dr. Yurai