>>>>>Do all portable toilets that one might use on a boat like Pocketship result in unacceptable odors after use or are there some that contain that unpleasantness such that sleeping aboard Pocketship with one wouldn't be impossible?<<<<<<<<<
No way. I took the Folkboat's 4-year-old chemical head to use on PocketShip. That particular head has seen, um, plenty of use. In the Folkboat the head is stowed within about 24 inches of my nose while sleeping in my favorite berth, about twice as close as it is in PocketShip. In years of overnight cruising on the Folkboat it never emitted a single offensive whiff. The odor ranged from nonexistent to a faint pleasant odor of mint, from the chemical treatment. I only emptied it once a season, too.
I still prefer a bucket for all modes, but our fairer sex will sometimes diverge on that opinion.
My fave: