It's been covered in science fiction a number of times - what comes to mind immediately is Marc Laidlaw's take. https://www.marclaidlaw.com/online-fiction/leng-along/

(He's a talented writer; if you know his name, it might be because he wrote for the Half-Life games.)

The girl with all the gifts.

As someone mentioned, Toxoplasmosis is one. We also know that your gut bacteria produce exudates that affect mood, sleep and other things.

One has to treat their housemates in the gut well to sleep well it seems. :)

Or clean house.

It's uncomfortable for sure, but you'll live through it - they won't. Get better tenants.

Probably. https://en.wikipedia.org/wiki/Toxoplasma_gondii

There are! One of the most dangerous is forcing you to write the word "doing" in places it makes no sense!

Pretty sure they meant "don't know about" in the phrase you're referring to. Perhaps they were posting from a portable "smart" device and got caught out by the ever so reliable "auto-wrong" system, or maybe they just had a "brain-fart" while typing fast…