a few kids in a town east of mine got busted for having a rave...in which they were all smoking manure...cow shit...yet they were high as fuck because they thought that they would get high smoking this shit but i must say i like your user name
It's probably psychosomatic. Although smoking anything can cause oxygen derevation which will leave you feeling a sort of high. If you have a headache in a few, that's a good idea what your doing isn't wise.
If nothing else, the inhalation of smoke could have prevented your brain from getting a normal amount of oxygen, giving you a short term "high".
I've smoked some catmint(catnip) before....didn't work all that well, but it's a pleasant smoke, because it tastes minty.
When my husband was much younger, he tried smoking dill weed, basil, and I forget what other garden variety herbs he tried. Silly guy. When I around 12 years old, I heard my parents talking about someone "smoking grass" and I didn't really understand but I was curious. :& So I took a piece of notebook paper, tore up some grass from the front lawn, put it in there, rolled it, and lit it with a match. Tried smoking it too. Silly girl!