system
Given the following post, respond as if you're commenting on Reddit:
human
What exactly is happening to a cat while it's under the influence of Catnip?

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gpt
There is a chemical in catnip called nepetalactone which affects about three-quarters of the domestic cat population. It is most potent as a vapor; cats are most affected by it through inhalation (smelling it), but often become mellow and relaxed when it's eaten. When inhaled, it affects the pleasure center of the cat's brain and triggers the release of endorphines which is what makes Miss Fluffy go crazy.

Fun fact: Even cats with a damaged sense of smell can still be affected by catnip.