There is an old sticky thread
Orchids with a strong scent - but it's long, so there's no harm in a new thread, with a slightly different take on it
Of mine, I love the fragrance of my Brassocatanthe Little Mermaid - smells like roses, and the scent is quite strong early in the day.
My Cattleya Tropical Pointer also has a very nice, sweet floral fragrance; previous years, I had been aware of a fragrance from it, but it seemed quite subtle - this year (perhaps because it was in the bathroom) it was impossible to miss the lovely fragrance.
My Neofinetia falcata (shojyo x shutennou) also has a wonderful sweet floral fragrance - my other Neos have nice fragrance, but it's quite subtle, this one was much more noticeable (tho it too was in the bathroom while in bloom, so perhaps that is why it seemed so).
I don't think I have any with unpleasant fragrance.