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How Does Your Nose Smell Things?

The inside of your nose is like a chemical laboratory for smelling. It has the power to smell even extremely small amounts of an odor. Odors are actually tiny particles, or molecules, of gas that travel through the air and into your nose. In the highest part of your nose, these molecules touch a group of nerves called the olfactory nerves, which carry the “odor” messages to your brain.

If your brain recognizes the odor, it means you have smelled it before. If it is a new odor, your brain makes a record of it so you will remember it the next time you smell it.

Your brain can store, recognize, and remember tens of thousands of different smells!

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5 Comments

  1. lady
    Posted 2008/01/21 at 4:40 pm | Permalink

    tens of thousands! wow that’s a lot!

  2. Anonymous
    Posted 2009/02/24 at 11:51 am | Permalink

    thanks that really helped me!!

    science hmwk in for tomorrow, cheers for the info!

    keep up the good work

  3. Peter File
    Posted 2009/03/26 at 2:00 pm | Permalink

    Jebus!!!

  4. BB
    Posted 2009/09/01 at 7:47 pm | Permalink

    Thank you so much I had a question about how does the nose smell things and you answered it thank you.

  5. kevin
    Posted 2010/06/03 at 5:45 pm | Permalink

    it didnt have all the info. i needed for my school report.

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