oral sexputting the mouth on the penis (fellatio), vagina (cunnilingus), or anus (rimming). In general, theres little to no risk of getting hiv from oral sex. But transmission of hiv, though extremely rare, is theoretically possible if an hiv-positive man ejaculates in his partners mouth during oral sex. Hiv transmission only five body fluids can contain enough hiv to infect someone blood, semen (including pre-cum), rectal fluid, vaginal fluid, and breast milk. Hiv can only get passed when one of these fluids from a person with hiv gets into the bloodstream of another personthrough broken skin, the opening of the penis or the wet linings of the body, such as the vagina, rectum, or foreskin. for transmission to occur, the hiv in these fluids must get into the bloodstream of an hiv-negative person through a mucous membrane (found in the rectum, vagina, mouth, or tip of the penis) open cuts or sores or by direct injection. Myths about hiv transmission had already taken root, and these myths continue to make life difficult for the 1. Hiv can enter through an open cut or sore, or through contact with mucous membranes. Transmission risk is very high when hiv comes in contact with the more porous mucous membranes in the genitals, the anus, and the rectum which are inefficient barriers to hiv. Although very rare, transmission is also possible through oral sex because body.