Less fluid intake (a concentrated urine) is one of the possibility for urine smell. A mild urinary tract infection (UTI), which may not be symptomatic, especially in the diabetes, is the other cause. Alcohol, diet (asparagus etc) are the other reasons. So the small may not be concerning, but it do warrant a urine examination. Please see this resource;
If dehydration, UTI, dietary factors, alcohol are ruled out, your doctor may consider repeating some blood work like blood urea nitrogen and liver function tests.
Please feel free for your follow up questions.
I would be happy to assist you further, if you need any more information.
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