many factors can attribute to your "enhanced" sence of smell. One can be lack of exposure to other odorous elements.
A keen person is a person with sharp senses; quick to understand.
A human nose can smell a trillion different smells. There are even more than 10,000 odorants that a person can differentiate also.
We get used to the smell. You can smell it when you first put it on.
A rotten egg smell can definitely make a person feel sick. This is especially the case if the person has a weak stomach.
sleep
yes they are
The average person has at least 1 best friend, and usually many other friends.
yes it is
Anosmia is the term for being unable to smell.
A dogs sense of smell is so acute that it can smell a person who was in a place days after.
They can smell :-)
The human body still has a smell, even during surgery, but if the person wasn't smelly to begin with, then the person will most likely not smell during surgery.