Ok shower thought related to Mithraeum Chores in a sorta tangential way (Shower thoughts in that it relates to showers and occurred to me IN a shower);
Do you think John actually bathes in any way anymore? Like, showers, bathes, 'sonics', any of it? IDK, can see him just sorta... falling out of the habit when it was just him and Alecto on ruined earth and then, post resurrection, he was always like "Oh I'll bathe tomorrow" cue a century later and he's just totally forgotten.
IDK, can imagine him totally just, like, atomizing all the filth off of his body with necromancy and just leaving that faint citrus odour his necromancy has hanging around. That or he just kinda smells earthy like dirt.
Also probably a whole slew of jokes about his own BO (purely for his own amusement, as most of his jokes are) over the myriad revolving around 'musk' in some way or another. Both because he's using it ironically and because he can make Elon Musk jokes about it.
THE FACE I MADE WHEN I OPENED MY INBOX AND SAW THIS
Love how we went from "Harrow is an unwashed gremlin" to "what if this guy factually never ever had a bath in ten thousand years"
I feel like the fact that the Mithraeum has a bunch of bathrooms (not even sonic showers!) and it's own water recycling plant (!!!) means that its inhabitants probably really like to relax with a bath bomb, also because they literally couldn't get that anywhere else.
However re: John and Alecto... you know that post nukes there definitely was a period of time when they got all their washing done via acid rains Alecto wanted to swim in the ocean at every chance she got, which she did, and it might or might not have resulted in chemical burns. It was a rough time ok