The blue green wavy leaves are diagnostic for this species as is the not so wonderful floral scent. There are other crinums that give off a wonderful fragrance but this is not one of them. Fortunately it can and has been used to create other cold hardy crinums some of which may be better in the fragrance department.
Even without flowers the foliage has a commanding presence in the garden. Needless to say no one else in the neighborhood grows these, nor anyone else in my state as far as I know. Besides the trouble of finding them in the trade, the other reason they are not widely grown up here is because most gardeners who are aware of crinums probably think they all are tropical plants, but that is not the case with this one. One of the neatest things about gardening is trying plants that are "not supposed" to survive in your area. Sure, many might not survive, but many will, and horticultural rule breaking makes for some of the most interesting gardens in my view.