Why did natural selection (or god or whatever you want to merit) give us the sense of smell?
by 
Isaac
ANSWERS: 5
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For several reasons; To identify food, To identify whether food has gone off, To identify whether something is poisonous, To identify each other (probably more important to prehistoric humans than modern ones).
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All of your senses, touch, smell, taste, sight, hearing are our physical organs connecting through vibrations to the unseen world. The sense of smell connects memories, to tastes. It triggers the sense of accepting or rejecting on a primal sense level. Animals use their sense of smell chiefly over almost anything else. It does not judge, it's an instantaneous reaction. You with your brain can control your reaction to it, but you have to do so deliberately.
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To let me know what not to put in my mouth. :) +5
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Most likely to sense food or danger. There must have been a positive survival benefit to it. +3
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So we could ferret-out "rat shits" who advertise their "dating match sites" in comment threads under ABers answers!
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