So I've been thinking about what has changed since my LOs pee started stinking really bad and he started eating peanut…

So I've been thinking about what has changed since my LOs pee started stinking really bad and he started eating peanut butter and jelly sandwiches and we started cows milk a couple of days ago. I can't help but wonder if that has anything to do with it. He's pediatrician said it's not a UTI. Can't figure out what else it could be.