Fried chicken/onion smells.... Yucky

Ok.. Let me mention this first... I've been on metformin for a month now & will continue taking it until the end of March. My 3rd week, I had really sore boobs towards the nipple & I absolutely can not take the smell of fried chicken or onions 😷 I Love fried wings and onions.. but this has been a big change for me... Not testing until mid March. Any suggestions on why this might be?