I recall discussing this with someone who didn't think there were any serious retcons in the series. Basically they thought that aromatic amphetamines were being mass produced via cow feces.
I told them no, I'm pretty sure they had pharmaceutical grade speed and everything. And in the lore: accidentally making psychoactive meat was bad for business. As in, not something used to manufacture drugs. Food is expensive to make, beef in particular. The economics don't make any sense.
Plus, the manure from feeding said aforementioned tainted beef to cows was rather fatal to humans, as indicated by Myron's experiments. He states that it was "not on purpose" and was motivated to avoid killing them because "slaves are expensive", and thus it made the Mordinos mad.
Plus, why and how in the hell would the Mordinos get their hands on the exact same make and model of inhaler...which had no Jet in it...and coincidentally put Jet which they coincidentally called Jet into it? And what's the reason for it not being in the first title? Obviously it was always intended to be a wasteland invention.