I miss when heavy discounts like that were common. Much harder to find now. They usually manage to sell it off at much lower discounts instead.

People have different sensitivity to smells; I wouldn't trust my nose to detect when something starts to spoil, and when it completely went awry I am able to see it anyway.

Most things I eat don't even need a sniff test. You can see and feel veg is going off before you can smell it and its safe to eat for longer than I am willing to eat it. Its only once it starts going mouldy or slimy that its unsafe.

Soy sauce, honey, salt, dried herbs are essentially never going off. Worst with herbs is reduced flavour, but I grow my own. Been meaning to make a smoked salt and herb mix sometime. Got to actually smoke some salt though.