You sound so incredibly frustrated and I can imagine you're pretty exhausted, given how much you care about so many things.
Do you find it interesting to watch others struggle with adjusting to extra caution at the moment (regarding the germ factor), something you've already mastered? I wonder whether you've even thought 'These people are nuts! Why are they struggling so much with such basic cautionary tasks?' By the way, I could never stand sharing drinks either, as I imagined a bit of someone else's saliva having dropped into the drink, before they gave it back (blah). As a mum to 2 teenagers, when my kids were little it used to horrify and amuse other mothers that I couldn't share a biscuit with my kids. All that slobber, no thanks :) I smile as I write this.
You know, I find one of the hardest mantras to incorporate into my life is 'I don't care'. Three basic words yet very powerful. I care about a lot of things that make sense to me (yet not to others) and I care about a lot of things that don't make sense to me, such as why I have such a fear of spiders. I do care about being bitten by one but even if there's one on the wall on the other side of the room I become completely fearful and pretty insane in my behaviour. And I care about hanging up towels 'properly', which drives my husband a little nuts but it makes perfect sense to hang a damp towel in a fashion so it's dry for the next use. Heaven help those who bunch up a towel on a hanging rack in our house :)
You sound like someone who is very sensitive, especially to your environment. While sensitivity is what helps us create order, over sensitivity is what goes toward creating disorder. We know we're facing disorder when our focus overtakes general order in life, such as time sensitive matters or things that require us to have no fear, for example.
Regarding the 'I don't care' factor, I find wonder can help override caring too much at times. With a shocking fear of deep water, my son actually got me out on a lake in a kayak last year. Admit, I wouldn't go unless the water was perfectly calm but I did wonder what it would be like to be out there. I wondered so much to the point where I wished to go out. Wish granted through courage! Fear's still there but not as bad. Sounds strange but could you wonder what it would be like to walk from your bed to your door and back without shoes on? Try wondering, without thinking. The second we start thinking, we're thinking of a way out.