The cucumber smell is from moisture in the buds. You have to let them hang longer, end of story.
I thought a few buds were completely dried and I put them in a jar. After only a few hours they "sweated" additional wetness and the smell changed from dankness to cucumberish...
DRY MORE, DRY LONGER. preferably by hanging in ZERO humidity with fans blowing everywhere, and darkness... I've been told: when you think it's done, give it another three days...