Sweet urine smell with reactive hypoglycemia

I noticed my urine has a sweet or starchy smell when I eat starchy foods. The odd thing is that my blood sugar never goes above 120 (at least when I test for it). My blood sugar is usually in the 80's or below even after drinking OJ. I have had my urine tested before, but it was always in the morning (fasting). What do you think could be causing the sweet smell in my urine?