Being handed a challenge such as this is -- well -- challenging!
I know exactly how I want ivy to smell. I know it's green, just a bit musky with hints of rich, loamy earth and a whiff of red fairy dust and sparkles, dew, wet stone, moss. And it smells slightly of flowers ~ nothing specific, really, just your basic garden variety fleur.
I decided to investigate the real thing.
It smells like squash.