Question:

Why does spoiled food have such a bad smell?

by Guest56405  |  earlier

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Any scientific reasons?

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4 ANSWERS


  1. So you won't want to eat it.

    Seriously: the bacteria and fungi which decompose spoiled food give off certain chemicals, and those chemicals are detectable as smells.

    We have evolved to not like the smell of rotten food because otherwise we'd have eaten it and gotten sick. Our ancestors which didn't have that trait would have eaten rotten food, gotten ill, and had less offspring. So those of us who avoided the rotten foods become more common, and we evolved to be less and less likely to eat moldy food.


  2. Plenty, besides it being God's/nature's way of telling you not to eat it.

    It is decomposing. The smell is actually a combination of things. Much of it is the excrement of micro-organisms.

    If it didn't smell bad, there would be a lot more rotting corpses laying around, from eating spoiled food.

  3. most of the time it has just gone rotton.

  4. It's from the bacteria that's feeding on decomposing food.

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