this has been done before under a different listing.
look at the link below for some suggestions.

Here is a link that might be useful: most fragrant plants

Clerodendron trichotomum is a very fragrant shrub and blooms in summer when most shrubs are finished. Mine sends frangrance throughout a large part of the garden. Flower clusters are very showy, reddish-purple calyx with whitish flowers. Has blue berries in the center of the reddish calyces in fall. Seedlings can be a bit of a nuisance but with normal weeding not so bad.