Is Precum Dangerous?
In HIV positive people both precum and semen can contain the HIV virus. The more body fluids you are exposed to, the greater the risk of HIV infection. As a result, semen is riskier than precum because there tends to be more of it. But you can become infected with HIV and other sexually transmitted diseases (STDs) if you are exposed to precum. As with semen, your risk of catching HIV or other STDs from precum depends on the sex act – from sucking and fucking to hand jobs.