This caught my ear too. 'Her disgusting habits'. I think it's a private dig on her drinking, among other things.
It’s also her appalling lack of basic hygiene. There were reports dating back to the 1970’s of how she despised bathing/showering, using deodorant, changing her under and outer garments that were in need of laundering, etc.
I can’t imagine that plays well with him, given DJT’s penchant for cleanliness!