Looks like someone tried:

Uranyl salts are toxic and can cause severe chronic kidney disease and acute tubular necrosis. Target organs include the kidneys, liver, lungs and brain. Uranyl ion accumulation in tissues including gonocytes produces congenital disorders, and in white blood cells causes immune system damage. Uranyl compounds are also neurotoxins. Uranyl ion contamination has been found on and around depleted uranium targets.

Green Skittles

Peroxide and dead mouth flesh.

i dont know, but since it is produced in a stage of uranium enrichmet, and chemists have a worrying tendency to accidentally taste stuff, I am convinced there's someone out there who knows.