out of curiosity, what would be comparable to catnip for humans, and why exactly do cats get so excited about it? how does it affect them?
There’s actually an entire Quora topic on this, which I think is fantastic. It’s worth a read because it gets into the neurology of catnip. It suggests that LSD and weed have similar effects on humans to what catnip does to cats.
Interestingly enough, other google searches report that the compound cats react to - Nepetalactone - is a sedative when ingested, but effectively functions like a stimulant when smelled. So in that vein, one could argue that any delicious food with a strong smell (think chocolate or pizza) could function like catnip for humans who favor it: they get super excited when they smell it, but grow sluggish and/or fall asleep after rapid ingestion.