I'm after a Latin word or phrase meaning something like "let the bad air be cleared". Anything of that ilk. Something Willow at the peak of her powers might say as part of a spell to protect herself, and others, if she realised the air was contaminated by a hallucinogen.
Doesn't have to be Latin; Sanskrit would do, or Tibetan, even Welsh or Gaelic.
Also, if anyone knows the correct way of saying "the Catwoman" in German I'd be grateful for that too.