Why fragrance?

When one thinks of scent, one always thinks of perfume.  What about the scent of everyday life?  The scent of the outdoors? The scent of the foods we cook? The scent of our clothes; whether from the wash, the dryer, or the line?  Before perfume proper, there were just the perfumes of day to day life.  What are the scents that we encounter daily that inspire our favorite perfume choices?