Huby often asks if it is safe to eat week old soup , beans, rice,.. . .
I tell him, NO.
He says, but what about this? And what about this?
I say, NO again. This is a constant conversation. Why not eat the soup within two days?
This time I had had enough. 

I told him it was his decision but I would not sit with him in the ER waiting for the doctor to explain to him this:
Food can deteriorate as a result of two main factors:
1) growth of micro-organisms - usually from surface contaminations -- especially important in processed food
2) action of enzymes -- from within cells -- part of normal life process (responsible for respiration, for instance) . It is important to note that many plants -- fresh vegetalves and fruit are still alive even when raw, and meat from animals undergoes gradual chemical changes after slaughter.
He remains confused by #2 because there is no smell, no visible deterioration.
The bacteria release enzymes that are poisonous and that send people to the ER.
http://www.biotopics.co.uk/pot/foodsp.html
Also this:
http://www.foodsafetysite.com/educat...lage/spg1.html
And this:
http://busycooks.about.com/library/lessons/blrefrig.htm
M
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P.S.
He threw away the soup and found something else to eat.