How to explain HIV & oral sexThe risk of HIV transmission from oral sex is extremely low. Though the presence of cuts, bleeding gums, or STDs can elevate the risk. Options for lowering the risk of transmission during oral sex include using a barrier like a condom. If a client does not want to use condoms, not allowing partners to ejaculate into the mouth offers some protection.style.visibilitystyle.colorfillcolorfill.type