1. Why do babies sneeze? It is a normal physiological phenomenon for babies to sneeze. Sneezing is a self-protection mechanism of the body. When mucus or foreign matter in the nasal cavity irritates the nasal mucosa, the body will automatically produce a sneeze response to expel these irritants from the body. Because the baby\’s nose is relatively small and easily affected by external irritants such as dust and pollen, it is smaller than