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The human nose can detect over 1 trillion scents. Yet somehow misses the obvious ones.

✓ TRUE FACT
Human smell is highly complex, combining hundreds of receptor types into vast combinations. The “trillion” figure reflects how many mixtures we can potentially discriminate, not that we have a trillion separate receptors.

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The human nose can detect over 1 trillion scents. Yet somehow misses the obvious ones. | SmartAss Facts