In no particular order (and I may come back with more):

Hickory nut rind, it’s the smell of the forest for me (other good ones are sweetgum leaf and tulip poplar leaf)

Woodsmoke

Good fresh coffee

Cedarwood

Amber

Myrrh

Osmanthus

Bison grass

Rose and peony

Clove

Cardamom

All the citruses and their flowers

Sunflower

Hazelnut

Almond

Tomato leaf

Rosemary

Star jasmine

Jasmine

Gardenia

Jujube flower

Honey locust pod and flower

American persimmon fruit

Good vanilla

Leather

Clay and glaze tend to have a subtle particular smell (not reclaim, which is stinky, but the fresh stuff)