I have OCD and my partner has PTSD. When I first developed OCD and it got really bad (oh what a nightmare that was for us both), I was really freaked out by germs and asked him to wash everything to an extreme. I asked all our laundry to be washed 2-3 times and stuff like that. Needless to say, him trying to take care of me while he was dealing with PTSD was really hard. But anyway! I would say try to get him to do the laundry if he wants it done a certain way. I know this might not be easy/possible because at least with my partner, chores really stress him out, so this might not be possible. But, I think its worth trying. If this is some kind of OCD tendency, I think it would help dampen it. When my partner made me responsible for the laundry, it was easier on both of us in the long run. I was very pretty resistant to it at first, but having to do the work required for my unusually high standards of cleanliness made me have to weigh the consequences more ("is following this ritual really worth spending the extra time and effort, or can I go without it this time?"). And if my anxiety about the germs was bad enough, I did wash it 2-3 times! But at least there were no more fights about it and he didnt have to suffer for my standards.