@silicasandwhich @N33R My other comment goes into that.
Also, humans are not unique in developing prions and sometimes the particular variant is infectious for humans too (this has been a problem with deer and beef).
humans don't just randomly spawn prions when they die or their flesh gets severed.
No, it's a problem that happens in living humans. Misfolding proteins. It's a bit similar to cancer in that it's a normal metabolic process going haywire, but it otherwise involves different mechanisms.
which contributes to why it's generally a good idea for your health to reduce meat and fish consumption
A somewhat related fun fact, this is (part of) the nuance in risk between wild/hunted deer meat and commercial herds.
There is (at least in some countries) specific attention paid to this hazard and its early-ish detection to mitigate losses to cullings upon detection (and liability).