I had a fuzzy night a week prior that has kept me up at night. While outside a bar waiting for a cab, I asked another individual who was about to enter the bar for a cigarette. Turns out he rolls his own, so I remember him taking out a bag of tobacco, rolling papers, and I think even a cigarette rolling device, to roll me a cigarette. I do not necessarily remember even sharing it with him. During the conversation, I recall "HIV" was mentioned, yet I do not remember the context. Whether he had it, or whether he was messing with me, I cannot remember. 

Regardless, I woke up the next day startled that I recalled "HIV" being mentioned, and of course turned to the internet to see how it could be transmitted, assuming that this individual had it. 

My question is, is there any chance in this scenario where HIV could be transmitted? What does not help is that I also suffer from OCD, and of course my mind is creating any possible scenario in my head of potential transmission, such as, well what if I was somehow pricked with a needle without knowing, etc. The man was with a group who went into the bar already, and he went into the bar after our encounter outside. So it wouldn't make sense for him to do anything deviant. But of course, the mind of an OCD sufferer does not help. 

I want to thank you for your time and for assisting others with this forum.

It is my pleasure to tell you that the events you describe in no way put you at risk for HIV if the person you encountered had the infection. HIV is transmitted only through direct sexual contact or injection of infected material deep into tissue. It is not transmitted through kissing including deep kissing or the transfer of the virus on inanimate objects. Thus, if the person you mention had HIV, any transfer of saliva through with the cigarette he provided would not put you at any risk whatsoever for infection. This is true even if he had a sore in his mouth or  tongue. I see no reason for concern and absolutely no reason for testing related to the event you describe.

 I hope this information is helpful to you and will help to you to put your concerns aside. EWH

I guess the only follow up question I had would be regarding if I somehow didn't recall any intentional needle stick injury. I think I would have at least remembered that or saw some sort of injury especially if it requires a deep injection. The OCD in me has me scanning for any skin lesions that I wasn't familiar with, checking the clothing I wore that night for blood stains, etc. But given the context of the situation, I just couldn't see that happening, especially if I woke up the next day most concerned with the cigarette issue. 

Thank you again.

In sum before the question is closed, given the above, you would not perceive me as a risk to future heterosexual encounters and would not recommend testing? Thank you again.

I noticed my question was still open so I was not sure I was still able to post a reply. But long story short, my OCD got the best of me and I went for a 4th gen test today which was part of a 10 test panel. This would have been 31 days post encounter above.

Since posting, my OCD has tried to create any possible scenario of exposure in addition to the ones I initially posted. Such as, what if I was somehow assaulted and didn't remember any details due to being intoxicated. However, nothing indicated this the day after - zero bruising or any discomfort. I read another response on this forum, in which you stated that if someone received anal sex for the first time, they would certainly know it. On top of this, I am heterosexual. When I initially posted this question, the encounter was more fresh in my mind, and I stated that the individual went back into the bar after the cigarette outside. Unfortunately OCD says "well what if it didn't actually happen that way." Worth noting is that I am beginning counseling this week for OCD.

I know that you did not recommend testing and stated that tests are now 100% conclusive at 6 weeks and my test will be at a little after 4 weeks, but my final question is, how reassuring would the results be based on the exposure? Any symptoms since this time consisted of a few (4 dots) instances of folliculitis on my leg, which is likely due to sweating from skiing or something else. I've constantly felt my lymph nodes and found nothing, and any instance of waking up with throat discomfort went away after drinking water and was likely due to sleeping in a hot/stuffy room.

I sincerely thank you again for your assistance and helping on this forum. 

Even if you were exposed and there is no evidence that you were, it is unlikely that your partner would’ve had HIV or the virus would’ve been transmitted. For persons who acquired HIV following exposure and were tested 31 days the negative results that I’m confident you’ll receive is well over 95% conclusive. In your circumstance please consider it entirely conclusive.  Do your best to address your OCD.

 Take care. Please don’t worry. EWH