Hi there....you cannot contract HIV in this manner. You first need to educate yourself on the ways that HIV is transmitted. Unprotected sex with an HIV positive person, IV drug use where the needles are shared, inadvertent needle stick from an HIV patient. HIV isn't easy to get and people don't realize that. HIV does once it comes into contact with the air. Now if you were an EMT and you stuck yourself with a needle from an HIV patient, you would have less than a 1% chance of becoming HIV positive...that is how hard it is to get. When you mentioned exposure therapy what did you have in mind? Have you seen a psychologist for this? I did exposure therapy...sat in an AIDS clinic at a hospital on my lunch hour for several weeks....it worked. I don't fear HIV at all.