Smell Cthulu

Now You Can Find Out What Cthulhu Smells Like - sci fashion - io9
Black Phoenix Alchemy Labs has created a bunch of perfumes inspired by HP Lovecraft. Including - yes - a Cthulhu scent. Here's how they describe it:

A creeping, wet, slithering scent, dripping with seaweed, oceanic plants and dark, unfathomable waters.