I can relate to quite a bit of this
I also have health related losses. Before these I didn't have any issues re contamination. I have multiple skin allergies (amongst other things)… I don't over wash my hands. But I could imagine myself doing so.. I use tissues if visiting a public restroom etc (I try to avoid touching the door knobs). I was raised to be ''ultra clean'' (Scottish parental unit) but I've taken it to another level. I also hate showers I prefer bathing in rivers