Migraines and colognes/perfumes often do not mix. For that reason, I do not wear them. Occasionally, I dab lavender essential oil behind my ears, on my temples, on my neck, and on my wrists to fend off migraine (however, never if it is an off-cycle or smell-triggered one, as then it potentiates), and it has the added bonus of smelling faintly perfume-ish.
I do really enjoy a nice shampoo and hair products that smell nice. They are the subtle gift that keeps on giving, especially if I put my hair up in a clip when it was not completely dry.
On a guy, I very much appreciate the smells of automotive grease, saw dust, or evergreen. Often, a nice smelling deodorant is just enough.
Otherwise, I believe that not smelling my husband generally means good couple chemistry. For example, good friends of ours smell differently to me in a way that is definitely sexually off-putting - actually a good thing as far as friendships are concerned! I find that if there is a friend who has no smell I am more likely to be attracted to. Maybe it is because I imagine my scent and theirs would mingle in a pleasing way.
Years ago, our young adult niece lived with us. She always thought she was being discreet, but I could always tell when she and her boyfriend had been intimate… the smell of her room/their sex changed.
Regarding smell memories… so very true. All of my best and worse memories have smells strongly associated with them. If I sit and reminisce, I swear I can still smell them. Holiday traditions are at the top of the scent-memories. Honeysuckle reminds me of growing up and being outside in the summer.
One of my all-time favorites: petrichor.
Fresh-cut grass
Fresh-baked bread
Chocolate cake smells very sexy in the bedroom.
Lilacs = spring
Oh. And Flonase smells (and thereby also tastes) like daffodils.