Hello, I got another question about HIV transmission. During working, I was reasoning with a homeless person, we talk face to face (like 3 - 4 feet distance).
I am aware saliva is unable to transmit HIV, however i have canker sore and dry lips (I don’t know if there is tiny wound). If his saliva contains blood, and somehow the droplet got it in my mouth/ small sore, any chance for exposure? Thanks you.