Im not sure of the original scent of the old time "SweetAire", but i do know that the Odorific that came with the Omega was a cinnamon oil base.
Several yrs ago, a friend was cleaning out his mother's estate, and asked if id like her Kirby,,which of course i did.
It was an early production Classic Omega,,with the original shipping box and all. The attachment box and hose were still in the shipping box, along with the Rug Renovator in its box, and the Miracle Head in its box. The little glass bottle of Odorific was still in the attachment box, unopened. The lady never used the hose, or any of then attachments, everything in the shipping box was unused. THe Kirby itself was in pristene condition. Still had the original belt on it even.
Anyway, i did open the little bottle of Odorific, and it was definatly very cinamony. This was about 15 yrs ago, and the smell is still as strong as ever, whenever i use it.