Given the ladies/pimps swap profiles or acquire existing ones for new girls this thread is very unreliable in its current form.
Either you need to confirm that the profile is in continuous use by the same pictured lady and there's confirmed bb service indulged in i.e. she offers, punter indulges.
Or you post pics of ladies confirmed offering at point of encounter not just on profile along with their known aliases.
That all said, if you're worried about infection you shouldn't be engaging in any skin to skin or exchange of fluids at all; genital or oral especially. I.e quit punting and massage extras entirely.