The sexual desire that has to do with breath.
Jim: Hey Kayla, will you blow on my neck?
Kayla: Why?
Jim: I have a breath fetish.
Kayla: OK (blows on neck)
Jim: Ahhh
by Wildcat9826 May 30, 2017
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Being aroused by smelling/feeling someone's hot breath in your face.
"Hey honey, blow your hott breath in my face."
"But I have halitosis."
"Mmm even better, I have a breath fetish!!"
by wordwanker September 16, 2018
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