I don't know....
I only bait my breath if I want to catch a fish with it.
Bated, unless you have a worm in your mouth..
I think it would be, “...abated breath”...as in “holding your breath”.
“Bated” is one of the many words Shakespeare invented (or at least he was the first person to put the word on a piece of paper that survived to this day).
“Bated” is a form of “abate,” which means to diminish, beat down, or reduce. So when youre waiting with bated (read: abated) breath, youre so eager, anxious, excited, or frightened that youre almost holding your breath.
Ain’t the interweb wonnerful?