Speaking of catnip, the active ingredient in it is also present in valerian root capsules sold OTC as a sleep aid.
The day I found out this factoid I just had to go home and test the theory on my cat. Results: She went ape, if only for a brief moment.
Never tried the stuf personally. Did your cat bite you high or just being cute?
Personally, although I like cats, my immune system deems their saliva and fur to be evil and will punish me fore around them.