HIV/AIDS can be contacted from oral sex:
If there is a broken tissue or sore in the mouth or where ever there is a possibility that the body fluids can be exchanged, the potential of HIV/AIDS transmission is likely to be contacted. Oral sex can transmit HIV/AIDS infection both from an infected male to an uninfected female and from an infected female to an uninfected male too. Both semen and vaginal fluid from HIV/AIDS infected persons contain a very large quantities of HIV/AIDS virus. The viral burden in these fluids reflects the amount that is found in the blood {plasma}.

You can also get infected if you swallow sperm {semen} during oral sex even without any sores in your mouth. HIV/AIDS can be infected through the ingestion of semen from an HIV/AIDS infected person regardless of whether the recipient has sores in their mouth or not. Having a sore or break in the mucosa will simply increase the risk of transmission through oral sex or suck.

Even when the infected person dies, the HIV/AIDS virus still exist in the body of the corpse. The relevance for this is involved in the burial practices during the preparations of the corpse like bathing the body and touching the body while preparing it for burial. The risk does not only lie with the HIV/AIDS virus but also with so many other opportunistic infections in the body of the corpse most particularly if known to be an HIV/AIDS infected person, corpse must be handled as if infectious. This would be irrespective of the duration of time since the death of the corpse. Any fluids or tissue should be handled with utilising universal precautions like using gloves during autopsy, gloves and eye protections should be used at all times. As stated above, there is high risk from infections beyond HIV/AIDS. Most other hepathogens are heartier and longer lived than HIV/AIDS. You would be concerned about hepatitis, and TB amongst many others.

HIV/AIDS virus can also survive in the blood outside the body:
If the blood is dried, the virus will be dead, but if is wet, then a chance exist that it could still be active. the risk is very small but rather be safe. Always try and use gloves when you are in the situation where you might be in contact with blood or fluid. HIV/AIDS is very short lived on an inanimate surface. Consider it very infectious in wet fluid than in a dried fluid.

You can also be infected through kissing:
There is so much speculation around this issues and there are no absolute answer. If there are open sore in the mouth, the chance does exist that bodily fluids can be exchanged. Saliva can carry the HIV/AIDS virus but enormous amount of saliva has to be present for an infection to occur. The options here is to dry kiss as opposed to the wet kiss but it is very sad that young people miss out of the pleasure of kissing. Kissing provides a good motivation for knowing the HIV/AIDS status of your partner.