Q.honeysuckle
Honeysuckle lost fragrance this year. It bloomed flowers with no smell. Last year fragrance filled the air.

If there are less blooms, there may be less fragrance.
Environmental causes, nutrition, pollination and pruning can all effect the health of the plant.
Here are some links with more information.
https://www.gardeningknowhow.com/ornamental/vines/honeysuckle/honeysuckle-vine-care.htm
https://www.gardeningknowhow.com/ornamental/vines/honeysuckle/types-of-honeysuckle-plants.htm