Oral health has a direct impact on the transmission of infection a cut in your mouth, bleeding gums, lip sores or broken skin increases chances of infection. Oral sex is infrequently examined in research on adolescents oral sex can transmit oral, respiratory, and genital pathogens. The various type of oral sex practices are fellatio, cunnilingus and analingus. Oral sex is commonly practiced by sexually active male-female and same-gender couples of various ages, including adolescents.