DS is 19 and has personal hygiene issues. It has been the case for years.
Teeth brushing and body odour.
He does have some autistic traits (IMO) and has mild MH wobbles from time to time, but mainly he is happy and functions well.
I suggest nicely and casually that he showers and he says “later” or just ignores me. Even when I then get more blunt he just doesn’t accept that he smells.
Why is he like this and what do I do about it?