Jasmine sambac maid of orleans is your best bet. Plumeria obtusa varieties are also worth a try. I currently have a figo blooming but I think that's out of season so you probably wouldn't find one with flowers.

Some fragrant hostas are currently flowering, cosmos atrosanguineus and berlandiera lyrata.

Now there are of course orchids, thousands to choose from. If you want some names

http://www.chebucto.ns.ca/Recreation/OrchidSNS/frag.html

Of course none of these would survive outside during winter.

RP1

Mirabilis Jalapa or Four o'clocks would be good for next summer I started mine from seed in spring several years ago. They have a spicy jasmine like sent. The flowers start in early summer and last to frost. They will die to the ground in winter but return the next spring.They can get big I have them in the back of my beds. They reseed Quite freely, that may sound bad but unwanted plants are easily removed and seeds can be collected just as easily. Every evening around 4pm the sent fills the air!

Yes, I do have 2 small jasmine plants, I love them.
I would lova a plumeria, but I don't know if it would survive without alot of attention, it would have to come inside for most of the year.....

I do have some 4 oclocks! I love them, they smell like grape soda (that is what I thought of when I smelled them the other night!)
I guess I just don't have enough of them to fill the air...

Thanks

Trust me, plumeria don't require much attention except when it's sunny, but then they just require watering like anything else.

The deciduous varieties, i.e rubra, would require to be kept dry during the winter though when they're dormant.

RP1

RP1
You are really talking me into this!
They are so beautiful & I have only seen pictures!
Thanks

I don't know how it would do in zone 7 by my Confederate jasmine (Trachelospermum jasminoides) is just going to off right now. Just a thought.

Hardy Jasmine is Jasminum officinale which is hardy to z6 sheltered or z7 for outside.