Take it further and make the scent of each magic school the smell/taste of a different cheese.

Abjuration- A hard cheese, Romano.
Conjuration- String cheese, perhaps.
Divination- A hol(e)y cheese, Emmental.
Enchantment- A silky cheese, Mascarpone.
Evocation- Tried and true, Cheddar.
Illusion- American, ha!
Necromancy- Limburger, obvious.
Transmutation- Colby Jack, for sure.