Why Do We Sneeze Twice?

When something tickles your nose, like pepper or dust, your body sends a signal to sneeze. It is like a tiny alarm going off. You blow out all the air in your lungs with a big WHOOSH.

Sometimes the first blast does not clear everything out. Imagine trying to pick up a crumb with one hand and missing it slightly. Your nose realizes there is still something left. So, it does it again for a second time.

This double action ensures that your nose is completely clean. If only one sneeze happened every time, you might still feel a little tickle afterward. The second burst acts like a cleanup crew finishing the job.