Are left over Onions poisonous?

I don't think that there is any truth in this rumour. I dug up a few sources, of particular note being the one on Snopes and the Food Chemist blog. I don't have any major science qualifications, only basic deli training, but I don't see how left over onions could be any more dangerous than any other foods, and not from using them when cooking so far!

I'd guess it's false, poor hygiene is much more dangerous.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.