You are walking with your family when you smell something awful. Suddenly, everyone is looking at their shoes. It’s your sister. She’s stepped in the stuff a dog left behind.
The world is filled with smells – good ones and bad ones. With every breath you take, your nose tells you something about the air around you.
Imagine your dad is barbecuing chicken. You know this because you can smell it. You can smell the chicken because tiny bits or chemicals from it are floating around in the air. These bits are much too small for you eyes to see, but your nose picks them up. They float into your nose through your nostrils. They enter your nostrils with the air you breathe.
After entering your nostrils, the air, with the tiny bits of chicken in it, moves up into a space at the top of your nose. This space is covered with nerves. The nerves receive the bits of chicken and send a message to your brain. Your brain tells you that chicken is cooking.
But you will have to ask your dad when it will be ready!
Smells travel into your nose and reach your nerves. The nerves send messages to your brain. Your brain tells you what the smells are.
Picture Credit : Google
