i never act in any way other than how i feel, and to many people, i am a boring person, and to others i am humorless. some people think i speculate about interesting and quirky things that they find interesting.
i am not sure whether your topic title refers to sexual things because in my mind the words "turn on" generally mean "arousing" and in that context i think i turn people off.
i am not interested in sex and i am not able to be physically aroused, and when girls flirt with me, their flame of sexual enthusiasm is almost always doused by my disinclination to reciprocate.
an example is when sonia was dancing the other night to me playing music on the keyboard.
she had a scarf on initially, but as she danced, she disrobed and did some sort of belly dance around me and she retained the scarf in her hands and draped it over me in a lateral sweeping fashion, and i said "please can you keep your scarf off me, and also can you dance in another room where you will not distract my attention?".
she got dressed immediately and accused me of making her feel cheap, but all i wanted to do was play my song.
being myself is not a turn off if there is no one in my presence that is negatively affected by my being.