Urine Smells Like Chicken Stock

My urine odor changes based on what I've been eating. Coffee, popcorn, grape juice, and of course asparagus are the most noticeable for me, but then I also have an incredibly sensitive sense of smell. Is there a chance you're just noticing what you've been consuming?

Popcorn smell is often butyrate, but a lot of things can cause this, and I don't associate it with anything specific.

The buttery smell, like movie theater popcorn, is diacetyl or acetoin. This is a byproduct of glycolysis, and in my experience is usually associated with borrelia. I get this smell when I herx.

The asparagus smell is methanethiol or dimethylsulfide. I usually associate this with bartonella, assuming I haven't eaten asparagus. It likely derives from bartonella's catabolism of the sulfur-containing amino acid cysteine.

I get a greasy smell when I have low carnitine. This occurs because carnitine is needed for fat metabolism, so without enough carnitine, the lipids accumulate and it starts to smell. Sometimes it smells a bit like fried chicken. I'm not sure if that's what you're smelling, but maybe try taking carnitine supplements. Vitamin C and B6 are needed to produce carnitine, so maybe check if those are low too.

Tuna fish also makes my pee smell.