I despair of my DD where dates are concerned, good job she doesn't look in my cupboards
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I very much go by smell, looks & taste. I am very sensitive to milk going off, I can taste it starting to "turn" a day or two before anybody else. I hate yogurt as that just tastes sour to me. Cheese with a touch of mould (except blue cheese which can develop a dangerous mould) is trimmed, grated & frozen.
Veg is used, trimmed if necessary, in stir fry/casserole etc. Fruit doesn't last long enough so that it never goes off in my home
I was recently tidying my cupboards, I found a box of lasagne sheets, Exp 2009, they went only because I no longer make lasagne.