Christina Kim

Today, we know that humans can detect around a trillion scents. This number dwarfs the amount of tones we can hear, about 340,000. Or shades of color we can see, around 1 million.

This is because smell was extremely important for our prehistoric ancestors who lived in an inhospitable world. A world where they needed to be able to smell predators or prey from long distances away. A world where their instincts were driven by the smells they encountered on a daily basis. And the accuracy of those instincts were often the difference between life and death.

This is because smell was extremely important for our prehistoric ancestors who lived in an inhospitable world. A world where they needed to be able to smell predators or prey from long distances away. A world where their instincts were driven by the smells they encountered on a daily basis. And the accuracy of those instincts were often the difference between life and death.

This is because smell was extremely important for our prehistoric ancestors who lived in an inhospitable world. A world where they needed to be able to smell predators or prey from long distances away. A world where their instincts were driven by the smells they encountered on a daily basis. And the accuracy of those instincts were often the difference between life and death.

And with each breath, we are carrying in the odors in the air.

And with each breath, we are carrying in the odors in the air.

And with each breath, we are carrying in the odors in the air.

The odor molecules move up and up, lightning fast.

The odor molecules move up and up, lightning fast.

The odor molecules move up and up, lightning fast.

The genes responsible for those receptors are what Linda Buck discovered in 1991. They detect the chemicals, then start communicating with other neurons that will carry that information to a part of the brain that processes scent. And that's the amygdala hippocampal complex.

The genes responsible for those receptors are what Linda Buck discovered in 1991. They detect the chemicals, then start communicating with other neurons that will carry that information to a part of the brain that processes scent. And that's the amygdala hippocampal complex.

The genes responsible for those receptors are what Linda Buck discovered in 1991. They detect the chemicals, then start communicating with other neurons that will carry that information to a part of the brain that processes scent. And that's the amygdala hippocampal complex.

This also happens to be the part of the brain where our emotions and memories are processed.

This also happens to be the part of the brain where our emotions and memories are processed.

This also happens to be the part of the brain where our emotions and memories are processed.

So after Rachel patiently explained to me exactly how smell worked, I had one obvious question. How do I get it back?

So after Rachel patiently explained to me exactly how smell worked, I had one obvious question. How do I get it back?

So after Rachel patiently explained to me exactly how smell worked, I had one obvious question. How do I get it back?

I know what you might be thinking. Same thing I was thinking when she said it. Smell training? Really? Well, Rachel walked me through it.