Toxoplasma gondii (the cat lady disease) cause substantive changes in the Psyche of the victim.
TP spreads by feces to host exposure, that's why both the cat's and the crazy lady no longer have a "thing" with cat shit.
The parasite alters them to think that shit is OK; it's how it spreads.
Anon has previously posted that TP may also alter the SEXUALITY of the host.
It may be, in fact it's highly likely, that TP CAUSES GAYNESS.
Homosexuals have Toxoplasma gondii, and that would explain their fondness for excreta, and their fondness for the dirt hole.
TP has taken over their minds, and it causes them to engage in behavior that is beneficial for the parasite.