What is something that is a turn off from a man? something he does that he is not aware of doing?

I know that we, as humans, are often very judgmental, and it seems natural for us to evaluate one another. After all, our biology is deeply rooted in instincts around mating and seeking the best possible partner for offspring.
What is something that is a turn off from a man? something he does that he is not aware of doing?
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