So what about in some questions here in this website the doctors mention that there is a tiny risk !?
I
No risk. As long as your not having sex with him you are fine, just remember HIV is a STD. Meaning you need to be having sex 1st in order for it to be transmitted. Handshake, kissing, hugging even sharing utensils is not a risk for HIV. Be fair with your colleague he is as human as you are and is to be treated with respect.