I couldn't find any resources that say. My best guess (from my knowledge of kitchen food safety, never having poisoned anyone I fed) is that it will become contaminated with bacteria from your saliva and after a few days they will reproduce to unsafe levels and could lead to food poisoning.
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.