It’s highly suspicious, I dare to say. Seriously for once.
People have been discovering new ways to get high, like the known case of cough syrup used to manufacture meth. Or the equally well known psychedelic concoction of apple cider vinegar, grey poupon and sour creme.
This could be another of those newly discovered secrets.
Are you sure about that one? IIRC, people are using codine-containing cough syrups to get high, and using pseudophedrine to make meth.