My dh doesn't really see dirt either. I don't mean that he can't actually see it if it's pointed out to him, but firstly, he doesn't notice it, and secondly, even if it's pointed out to him it doesn't really bother him that much.
In his case, he lived on his own for several years, and although he can do lots of domestic jobs, he would always choose to do as little as he can get away with, as he just doesn't see them as important. So when he lived on his own, he only ever cleaned the house if he was expecting visitors. He did washing when he had run out of stuff to wear. He mostly ate a hot lunch in the work canteen and had a sandwich in the evening. He let the garden turn into a wilderness, and asked some friends round about once a year to help him blitz it.
So I do all the housework, shopping, cooking, gardening etc, otherwise I would be waiting for ever for him to do it, and my standards are a bit higher than that. But I didn't make him like that, he has never seen domestic stuff as a priority, even when he lived on his own.