Man ignore his wife and refuse to have any relation with her because of her healthy problems

One brother who married with a woman 3 years ago refuse to kiss her wife because he says that she has a bad breath (halitosis) and he refuse to have any intimate contact to her because he says she has trush. She is suffering because of that, and the husband is ignoring her. My question it's is legal to refuse to have any contact to your wife/husband for this healthy reasons? Thanks for your answer --- I mean if is good to ignore and refuse to stay with your partner(wife or husband) because the other has any healthy problem like the ones I tell before. Sorry English it's not my first lenguaje and maybe I didn't explain myself well. Thanks for the answer.