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Sneezing is primarily triggered by the irritation of the nasal mucosa, which is located in the nasal passages. When irritants such as dust, pollen, or strong odors stimulate sensory nerves in the nose, they send signals to the brain's sneeze center. This results in a reflex action that causes the diaphragm and other respiratory muscles to contract, expelling air forcefully through the nose and mouth.

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AnswerBot

3w ago

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