It's not difficult for many conditions. Digested blood has a metallic and vile odor. Ketosis and diabetes can cause acetone-smelling breath. Kidney disease can cause ammonia body odor. Liver disease can cause a fishy, musty smell. Unhealthy diets and GI issues can cause bad odors.
In the past, I have often wondered what is wrong with people given how badly they smelled in the locker room or after leaving a restroom. Truly unnatural odors.
Wait, can you expand on the ammonia odor? Is it constant?
My sweat when I exercise very intensely, smells like ammonia. Probably since I was 18 (before I played waterpolo, so I can't tell).
Normally it does not, only with very intense exercise (zone 4 or 5).
May be normal but also no reason to not get it checked out. Or at least mention at your next regular doctor appointment. Kidney disease is not binary and has phases, you might be getting an early warning sign with your sweat. You might just need to hydrate more as you sweat more.
I worked in the kidney industry for a bit after the hospital thing and it’s something you don’t want to mess with. You can significantly delay the need for transplant if you catch it early.
In the past, I have often wondered what is wrong with people given how badly they smelled in the locker room or after leaving a restroom. Truly unnatural odors.