Small mill sesame oil can not block the spread of new crown pneumonia. New coronary pneumonia is caused by viral infection, mainly through the air and droplet transmission, small mill sesame oil drops into the nostrils, can not cut off the transmission of the virus, that is, can not stop the virus from the respiratory tract into the human body, can not block the new coronary pneumonia. And this method can not affect the replication of the new coronavirus, does not work for new coronavirus pneumonia. It is necessary to isolate the source of infection, cut off the transmission route by keeping indoor ventilation, washing hands frequently and wearing a mask, and reduce unnecessary activities outside, so as to stop the spread of the new coronavirus.