There is not much literature on if inhaling possibly infected smoke is risky. Recently, I smoked a hookah with a friend. My friend happens to be a Libyan doctor. Before we started smoking, I jokingly asked him if he was a virgin. I said that otherwise I didn't want to catch a disease. He laughed and told me he was a virgin and that anyway, I couldn't catch anything from the hookah. We both had separate mouth pieces. However, I know that even if a small amount of blood may have gotten on mine, it is not likely to get HIV that way. My question arises to inhaling smoke that was possibly infected. I just can't get this idea out of my mind that when I went to the bathroom, he may have put blood in the hookah water or spit blood inside the hose as disrespect for me asking him if he was a virgin.  As you know, like a bong, smoke from the hookah will pass through water and the hookah smoke is sort of a water vapor. If he put blood in the water and I inhaled this infected water vapor, is there a chance I could become infected? I'm also worried about this guy being a doctor who previously worked out in Libya. Libya is in Africa and although it's not a a country largely affected by HIV, I'm atu. I know it's not a big HIV infected country, so it's doubtful this man I smoked with was infected, but I was reading of a case in the late 90s where 400 children were infected with the virus. The Libyan government claimed two Bulgarian nurses intentionally did it, while the nurses claimed there were unsanitary conditions in the hospital. I'm sure this  was a highly publicized case in Libya and maybe this gave the guy an idea to infect the hookah if indeed he does have HIV. Am I just being super paranoid? In the insane event that infected blood got into the hookah water (where the smoke would pass through) or in the hose where the smoke would go up and I inhaled infected smoke (keep in mind hookah smoke is moist like water vapor) is there a chance I could become infected? I'm so worried. 

Forgive me for the typos and cut off sentences, but the box froze while I was trying to edit my question :) I wish I could stop worrying about this stuff. Last month, I wrote in to ask about possible blood from a worker on food. Ive been so paranoid and careful because in November, I tested negative and now I want to be soooooo cautious not to potentially expose myself to anything. I'm a bit ashamed to keep calling hotlines or constantly bother my physician with these worries, so here I am posting a second time :( 

Welcome to the forum. You were cut off because there is a limit of 2,000 characters (about 400 words) for new questions. As described on the forum home page, normally questions that exceed that limit and continue into a follow-up window are deleted without reply. But you didn't go that much over the limit and I guess I'm feeling generous!---

I know it's not easily transmitted orally by saliva, but can it be transmitted if blood were on the tobacco or inside the hose or in the water and I inhaled the blood in a sort of vaporized form? Would you recommend Pep? 

Basically if smoke mixed with HIV blood gets into your lungs via hookah water pipe? 

You are re-asking the same questions in different words. I already said that even if blood were to get inside the hookah (including hose, water, etc) there probably would be no risk of HIV. And how would such blood contamination happen anyway? I also said that oral exposure almost never results in HIV transmission -- which tells you that blood on a cigaratet would be little if any risk.---

Sorry, I dont believe I mentioned anything about a papsmear. Maybe my question was confused with somebody else. I asked if you recommend I take PEP or PREP? 

Oops -- sorry -- I had just replied to a different question that had a pap smear component. Apology for any confusion.---