If you give me six lines written in a material safety datasheet for the most chemically inert of materials, I will find something in them that could cause some human, in some situation, to die.
After a little bit of googling, it seems that sugar allergy from ingestion doesn't exist. Intolerance is not allergies.
I did find that there's apparently one case of anaphylaxis caused by injection of fructose, though it wasn't the normal reaction referred to as allergies.
If you give me six lines written in a material safety datasheet for the most chemically inert of materials, I will find something in them that could cause some human, in some situation, to die.