Eli5: why does our brain tell us that some smells are good, flowers, and some smells are bad, pig pen.

Question

Eli5: why does our brain tell us that some smells are good, flowers, and some smells are bad, pig pen.

In: Biology

Answer 1

Many unpleasant smells help us to identify things that are dead and dying. This is useful when trying to figure out if food is still good to ear or not. By developing a negative reaction to rotten food, we’re less likely to eat is and thus less likely to become ill from it.