
Cock sucking without a condom has very low risk of HIV-infection. It is possible to become infected this way. The risk may be low, but it is not zero. If you’re concerned about this low level risk, you can always use flavored condoms.
Cumshot, Spit or Swallow?
The safest way to conclude a good blowjob is a cumshot on your partner’s body or face, or all over yourself! Just make sure to avoid getting cum in your eyes.
If you want a mouthful of cum, it's safer to swallow than spit. Saliva has many anti-HIV properties, but holding the cum in your mouth until you can spit it out might expose any cuts or sores in your mouth.
With these general guidelines in mind, several factors can increase your risk while cock sucking;