We have a linen closet that for a time in my childhood was emptied out and made to serve as the “Nintendo room”, containing an NES hooked up to an old Commodore 64 monitor. I still associate that fabric/crafty smell with 8-bit gaming.
I also love the smell of sun soaked dog fur.
I couldn’t narrow it down to one. So far I have:
Freshly cut grass, freshly baked bread, a real christmas tree, pipe/cigar smoke, aviation fuel, sunscreen, candyfloss, fresh linen, the sea air, Indian food, corrainder, fresh coffee and the smell of a BBQ.