system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do cats smell amazing when they're sleeping?
gpt
Because you've been infected with a brain parasite that attracts you to cat pheromones. *toxoplasma gondii* is mostly benign, but it does control your mind to some extent, mostly for the purpose of spreading back to its main host, cats. Don't worry, about 1/3 of humans are infected.