sneeze

Sneezing refers to an unconscious "reflection" that occurs when foreign objects (such as dust, bacteria, pollen, etc.) that enter the nasal cavity are driven away. After the foreign body enters, the trigeminal nerve located on the nasal mucosa issues instructions to the respiratory muscles acting on the lungs, violently expelling air to expel the foreign body out of the country. Sneeze reflex, commonly known as "sneeze" or "sneeze spray", is a defensive reflex action caused by stimulation of the nasal mucosa. However, in the traditional folk customs, it has been regarded as a symptom of some abnormal behavior or the development trend of things, and the various explanations for it are more like feelings falling into the clouds.