If your having problems with stuffed nose, eating raw onions is good for unblocking it.

Onions get their distinctive smell by soaking up sulfur from soil.

Onions are low in calories and good source of vitamin C, calcium, potassium, and fiber.

Why do you cry when cutting an onion?

Since onions soaks up sulfur from soil, Sulfuric acid burns making your eyes watery to wash the irritant away.