Is there any correlation between kidney function and body odor?

Yes: But not always. If kidneys fail, the smell of urea products will be noted through skin and breath due to lack of efficient removal by the kidneys.

Unlikely: I am unaware of a direct correlation between body odor and kidney function.

Can be with azotemia: No correlation between body odor & norm, ally functioning kidneys. But serious kidney disease, as in end stage kideny disease or failing kidneys subjecs are unable to process or eliminate certain toxins such as urea. This gives them an unpleasant odor.