I like the slightly stale smell of a large body of water. Sort of like the watery freshness plus all the seaweed flora, some dead some alive, combine into the smell of adventure.
Tobacco smoke, but only when it is someone else who's smoking.
Tea tree oil is just great.
Fresh mango reminds me of the only time in my life when I didn't have any worries aside from my brother stealing my GI Joes