My list of favorites is long, and I just added a new one. On my trip I crossed the Eastern Washington desert area westward out of Coulee Dam. It began raining that morning and the desert turned green, and gave off a most fragrent, sweet spicy aroma. The best I can describe it is: Sage mixed with sweet floral.
Then the showers passed and it reached 104 farenheit. It just smelled HOT.
jim