It is not recommended to open the windows of a neighbor’s house with a confirmed case of novel coronavirus pneumonia and in close proximity. The new coronavirus is able to spread through respiratory droplets, usually within 1 to 2 meters, and does not float in the air for a long time. However, if two homes are close together and a neighbor may be coughing into a window, try not to open the window, as it is likely to create a risk of infection. In addition, if you live in a densely populated neighborhood, it is also not recommended to open the windows, there is a high risk of infection. When a neighbor’s home is diagnosed with new coronavirus pneumonia, the CDC will disinfect the patient’s home in a timely manner, if the neighbor is already in the hospital for treatment, then you can open the windows appropriately to ventilate the home, if the neighbor is still at home waiting for the CDC staff, try not to open the windows to avoid infection. Although a long time in a closed environment is not conducive to home health, but when there are special circumstances, or to close the window. When opening windows, you can ventilate your home for 30 minutes a day in the morning, midday and evening before closing them. Tip: In this article, “new coronary pneumonia” and “new coronary virus pneumonia” were renamed to “new coronary virus infection” on December 26, 2022, as announced by the National Health Commission.