If you think about it, this kind of problem was probably inevitable in zero g with no toilet. You try to hit the bag but it seems like there are bound to be mishaps.
I think the ISS has one or more toilets that use a vacuum to prevent this kind of thing but putting such a thing in an Apollo command module or a LEM would probably be out of the question.
When I was in college I visited NASA with a guy who was on a lot of the recovery teams for Mercury and Gemini. He said that when they opened up the hatch of one of the long term Gemini missions it smelled like, well like shit. Really, really intense shit.
BTW, when I visited the bathroom of the visitors area of the Huntsville, AL NASA facility had an exhibit about the waste system of spacesuits. The world’s most interesting bathroom, with the possible exception of the one at the Madonna Inn.
I agree. I’m remembering a description of a toilet that used air currents to help the excreta head down a tube to a holding tank. Unfortunately, the air made a vortex in the tank. Some to most of what was excreted would eventually touch the sides of the tank and freeze in place. Anything that kept riding the vortex had the possibility of coming back up the tube when it was opened, in the manner of a ping pong ball in a lottery machine. So a past success could turn into a failure later.