effluvium

effluvium\ ih-FLOO-vee-uhm \,noun;
1.A slight or invisible exhalation or vapor, esp. one that is disagreeable

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So, when the Beej is snuggled up to me, it's "feline effluvium"?

I always called it a cat fart.

"A rose by any other name...."  Well, maybe not a rose.