LOL I first read exactely the same thing than anyone else. So I had to search an online dictinary for salvia. Funny enough, I do know that word in German very well. And La, if it makes you feel better, here every granny will know what salvia drops are (good against a sore throat), but most kids never heard of it. So you are actually very young, belonging to the no-clue-about-herbs wild generation...
But why people would smoke that was beyond me. For me you might smoke peppermint just as well then. But I googled and apparently the "magic salvia" as it's called here is only one very special salvia species. So in that regard, yes we are old.