Rumor identification: Small mill sesame oil can not block the infection of new crown pneumonia. Rumor analysis: 1, small grinding sesame oil drops into the nostrils, and can not cut off the transmission of the virus: new coronary pneumonia is mainly through the air and droplet transmission, and small grinding sesame oil can not stop the virus from the respiratory tract to invade the body, can not affect the replication of the new coronary virus, so the new coronary pneumonia does not work. 2, small mill sesame oil drops into the nostrils, will make the nasal cavity barrier loss, reduce the human body’s resistance: the human nasal cavity has the function of cleaning and resisting foreign invasion, can block the air in the dust, adsorb dust, to avoid foreign objects directly into the lungs, etc.. Fragrance oil drops into the nasal cavity will greatly reduce its effectiveness in blocking viruses, and at the same time will lead to a reduction in the sterilization effect. In addition, when fragrance oil is dripped into the nostrils, it will reduce the sensitivity of the nasal cavity to protective responses from the outside world, leading to an increased chance of infection. Special Note: To prevent novel coronavirus pneumonia, the public should take formal precautions. It is also important to do a good job of cleaning the nasal cavity, for example, after removing the mask, use paper towels, wet wipes or cotton swabs dipped in warm water to clean the nasal cavity, or rinse it properly with warm water to avoid dirty things in the nasal cavity overnight and reduce the chance of pathogens invading the mucosal tissue.