oral sexual contact with a woman who may have an std can certainly transmit those viruses or bacteria to a partner. gonorrhea can be transmitted. chlamydia can be transmitted. syphilis can be transmitted. herpes can be transmitted. basically any std that a woman has in the vagina can potentially be transmitted to another through oral sexual contact. while it may be less-common than transmission from genital-to-genital contact it happens. if you question that disease-carrying potential of your sexual partner it would be wise not to have any contact; oral or sexual. the use of a "dental dam" -- a latex shield -- can help prevent vaginal to mouth transmission of stds but very few people utilize them in their sexual practices.
what viruses and /or bacteria can you contract giving a woman oral sex?