Olfactory Fatigue (Noun) Olfactory fatigue or adaptation is the temporary, normal inability to distinguish a particular odor after a prolonged exposure to that airborne compound.

The buzz on Justin "The Mac Guy" Long today is that he may have actually dumped Drew Barrymore for Kirsten Dunst or, at the very least, he was seen hanging out with Kirsten, holding hands in public.

And that's what's great about olfactory fatigue -- when you move from one smelly hippy to another, you hardly even notice the stink!