Somehow, the slight wiff of a distant skunk spray reminds me of my youth. Freshly laid asphalt road surface does it too. As I get older, my sense of smell and taste is getting worse. Oh, and I almost forgot ------- the scent of an engine burning Castrol 'R' bean oil is a classic----- but I don't think they make it anymore.
It's commonly used in model airplane engines too, and in real airplanes from the early 1900's that used rotary engines (kept the flyboys REAL "regular" too, or so I've heard). So perhaps at an airshow or at a model airplane fly-in?