Human nose can detect 1 trillion odours

For nearly a century, scientists assumed the human nose was capable of discerning about 10,000 different odours. Turns out, that number was missing a whole bunch of zeroes — new research shows that the human nose can detect over 1,000,000,000,000 distinct scents. Tell your dog to quit being so smug.

Lady nose

In fact, one trillion estimate is actually on the low end. And while you probably don’t encounter a trillion different odours in a given day (I hope), the capability to discern new scents means your nose is ready for whatever changes your environment presents. Learn more here or here.

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One Response to “Human nose can detect 1 trillion odours”

  1. Vincent Says:

    Hey! This post could not be written any better! Reading this post reminds me of my previous room mate!
    He always kept chatting about this. I will forward this write-up
    to him. Fairly certain he will have a good read. Thanks
    for sharing!

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