PV, she very might well do but it doesn't cause offence to someone if you don't show it at the time.
How can anyone discuss Contamination fears in OCD then when it comes to HIV/AIDS? And it also raises the question about the other side of this, that stigma against OCD sufferers is contributed to by those without anxiety who actually have HIV/AIDS.
(I do not believe those with HIV/AIDS do this, it's a valid point about how this swings both ways when it comes to ignorance)
I've probably shaken hands with HIV/AIDS sufferers too, they know it can't be transmitted that way so you will never know who they are.