I'll always remember the smell of the perfume Blue Grass. My mother would let me have a tiny dab of it behind my ears when she was putting it on.
Roses are the smell I associate with my grandma. She had a yard full of wild roses and always made sachet out of them when the petals were falling. Containers of sachet were all over the house and she always wore rose perfume. I don't wear it myself, but it's a very "comforting" aroma. I can remember sitting in church, sniffling, and she'd pull a tissue or a handkerchief out of her bra (we always called it "The Bank of Grandma" because she kept all sorts of things...money, tissues, bus passes..etc...in her bra) and wipe my nose with it. It always smelled like roses.
My beloved grandpa often had the faint smell of paint thinner on him. He was a painter and a wallpaper hanger by profession in his later days, so he was always dealing with paint thinner. I LOVE the smell of paint thinner.
My favorite uncle always was chewing gum or mints. When I get a whiff of peppermint or spearmint, I can remember him.
The fishy smell of tidal flats brings me back to childhood, visiting my grandparents in Virginia and driving to the beach. When you started to smell that odor, it meant the beach was only about 10 minutes further. Much excitement and arguing about who smelled it first.