Title : Love Smells
Characters : Yook Sungjae, Kim Namjoo, other idols

Yook Sungjae has this unique smell. It's a combination of all the best things in the world. Hugs, sunshine and love...
He's used to girls always falling for him after just one tiny whiff, and he loves all that attention, but then...along comes Kim Namjoo...

She's the first girl in history to NOT fall for him after a sniff and that's why he wants to make her his.

What Sungjae doesn't know is...Namjoo can't smell a thing. Couldn't. Ever since she was born. And what if...instead of just wanting to find out why she doesn't like him...he REALLY falls for her?

Extra stuff if you want / need it : You could end the story with Namjoo going under an operation or something to make her able to smell stuff. It works and the first thing she smells is Sungjae? (I dunno, it's your choice)