This let's you use the skill "Slightly Bad Breath", which is used by Capracious Cassie in Fei'Yin and Oscar the Marlboro in a BCNM60. It deals damage, blinds, poisons, and paralyzes the enememy. The best part of this is, that since it is an item enchantment, I dont think it can be resisted. The oscar scarf is dropped by Oscar.
My GUESS is that it is sililar, if not identical to the Malboro WS, Bad Breath. Prolly would be useful for certain, special fights. Not exactly sure, but that seems most logical.