The paper mentions that we are now regularly exposed to bacteria that can grow in cold environments. That's fascinating
I don't know if its spores or just odors or what, but I can't seem to get it out of the fridge; I'm pretty sure it's growing on or near the evaporator coils, in an area I can't access.
In a dedicated ice machine, the ice is constantly melting down the drain and being replaced by fresh ice, so it shouldn't get funky like normal ice is. Yes, it's a little wasteful, but our water comes from a surface lake and our sewer drains to a river downstream of the same lake so I can live with it.