Do cats become aware of the effect of catnip?

I don’t know how much the associate the cause & effects and/or care about the consequences, but my observations of quite a few cats on catnip is generally:

* Each cat reacts differently to it.
* Most seem to like and enjoy it.
* They tend to have some and want more but eventually get enough and/or settle down.
* Some eat it. Some sit on it. Some rub themselves on it. Some just sniff it.
* They have different crazy & spaced out reactions per cat.
* Most of them mostly seem to have fun on it.
* Some of them sometimes get a bit freaked out at some point. Hallucinations and/or over-active imagination and/or apprehensions seems to be involved.
* Cats who have regular access to it do seem to make fairly regular use of it.
* Freshness matters, as does whether it’s been rustled to release more.