TIP: Perfume ads make a great resource for describing smell.

Acrid
Musty
Anticeptic
Peppery
Aromatic
Perfumed
Biting
Bitter
Burnt
Citrusy
Comforting
Damp
Dank
Distinctive
Fishy
Earthy
Flowery
Heavy
Metallic
Minty
Mouldy
Musky
Pungent
Scented
Sickly
Sour
Spicey
Spoiled
Sweet
Tart
Tempting
Woody
Yeasty