Ewwww. I used to wait tables in a Chinese restaurant. I LOVE the smell of Chinese food, but not in my skin & hair. I also worked in a fast food place, hot chips, burgers etc.
I couldn’t WAIT to get in the shower when I got home, in the front door, in the bathroom, lather rinse & repeat 2-3 times to get the grease & smell out of my hair, exfoliate to get the smell out of my skin.

You need to be blunt, tell her she stinks, tell her the reek of the grease makes you ill & you refuse to have her in your bed dirtying up the sheets & pillow cases.
Give her an ultimatum, she cleans up her act or the relationship is Over

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