I saw a mention of the olfactory sense suppression medication in Strange New Worlds, and it made me wonder when the earliest version of this concept was written.

I know T’Pol mentioned humans smelling badly in ENT, and I’m almost sure she was taking some kind of suppressant.

Beyond that I don’t recall any of the other shows outright stating the practice, but it seems so in line with Vulcans that it had to have been thought up earlier right?