You
smell with your nose. When you breathe in, air and smells
travel through your nostrils to your nasal cavity. Some of
the smells reach nerve cells at the top of your nasal
cavity.
You
smell with your nose. When you breathe in, air and smells
travel through your nostrils to your nasal cavity. Some of
the smells reach nerve cells at the top of your nasal
cavity.
The nerve cells send signals to a part of the brain called the ofactory bulb. The olfactory bulb sends out a message and your brain decides what the smell is and what you should do about it. This depends on whether the smell is bad or good.
When you smell something sweet and yummy your brain sends a message to your mouth to tell it to get ready to eat.
Your sense of smell is important because it helps you to enjoy the favour of food and drinks and the smell of flowers.
It keeps you safe too as you use it to smell smoke, warning you of danger.