April Snow is slightly scented but its size varies. Make sure you can detect and like the scent as camellias, unlike roses, have a light scent. Not sure what it may do in your Zone 6b weather/location height-wise:

https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=267200

Many sasanqua and oleifera blooms already have a somewhat 'earthy' or 'musky' smell So, I'm not sure what kind of scent you are looking for.

There are a number of supposedly more 'floral'-scented fall bloomers out there: 'Ack-scent', 'High Fragrance', 'Scentsation', ‘Fragrant Pink’, 'Scentuous', 'Good Fragrance', 'Fragrant Jewel', 'Fragrant Fairies', ‘Cinnamon Cindy’, ‘Cinnamon Scentsation', etc.

I've not had any experience with them, nor can vouch for their claim to an actual 'scent'. My sense is many of these are just not hardy enough for zone 7A, let alone 6B. I would say they're better in 7B and warmer. You could always try one and protect it the first winter until it gets better established.

Hybridizers aiming for a 'hardy' scented camellia have used C. lutchuensis as one of the parents. It, however, is rather tender being a zone 8 plant.