It occurs to me that I rarely have occasion to smell much of anything. But there are currently several climbing jasmine vines in bloom in my neighborhood and I smell them when I am out bike riding. They are wonderful. So much so that I think it would be overwhelming if I smelled them all the time, if I was to sit next to them.
Things I rarely smell but whose smell I like are vanilla, baked bread, cut grass (it seems like I mostly smell the fumes from the lawn mower when someone's grass has been cut), coffee, even though I can't stand the taste, berries, cilantro, lime and other citrus, fresh baked apple pies. I even like some musty smells, like soil or a cellar that is damp.