A friend of mine posted a while back that if Glade, or Scentsy, or any of those candle/air freshner companies came out with a "Man Pack" of
1) Fresh cut grass
2) Wood Shop
3) Campfire
The guys lined up to buy them would send the production line into overdrive for a month. And I happen to agree.
(Edit to add: Not trying to be stereotypical/whatever with the "Man Pack", that's just how he termed it at the time)
The smell of a freshly groomed horse.
The ocean, just after a storm.
Any meat on a grill or smoker!
Bacon anythime!
Onions sauteeing in butter. I can't get enough of that smell.
Some kid started a candle company where the candles are in soup cans, and the soup is donated.
http://man-cans.com/index.php?route=common/home