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Humans always have a sense of smell. Puberty has nothing to do with it.
The sense of smell is the same for both humans and sheep. Sheep use their sense of smell to find food and to sense other sheep around them.
Depends on your beliefs. If you believe in evolution, that humans evolved into what is seen today, then sense of smell was a mutation that formed out of sense of danger and preservation. If you believe in God, that God created humans, then sense of smell was designed to give humans both an added pleasure and a better understanding of the world around them.
nose!
touch
Yes, a dogs sense of smell is ten times stronger than a humans.
Most likely. I say that because even humans can sense it.
No, but it is these rays that cause sunburn in humans with pale skin.
No humans sense organs are better than animals sense organs.
Most likely. I say that because even humans can sense it.
This question does not make sense.
The Nose.