The answer is NO RISK to both questions.
Next time you have a question, stay within your original thread- DO NOT post a new question.
I have never heard of salvia being able to transmit HIV at a highly succesful rate, nor have I ever heard of salvia being able to seep into your skin. It would be highly unlikely that HIV could go through hair follicles, in fact that might be something you see in a Hollywood movie. If so, they would have to go into your blood stream straight from the hair follicle. Chances are real slim buddy that you have contracted HIV this way.
Would you mind reading my question that I posted?
Be safer next time, dont stress about it, 99.999% chance your fine.