My L. sempervirens 'John Clayton' is not fragrant, but comes to mind as it is already budding up to bloom. Quite amazing. There are sorts of the species periclymenum like 'G S Thomas' that are very fragrant. A more commonly sold sort, L. heckrotii'Goldflame' is listed as fragrant in my forestfarm catalog. I cannot guess which sort you have. You are correct in assuming that a label would usually mention fragrance, if it existed.