Hello. Oral sex, when either giving or receiving, is not a risk for transmitting HIV. Air and saliva both inactivate the virus. The only ways that people get HIV is to have had unprotected vaginal or anal sex or to have shared IV needles to inject drugs. Does not matter if the other person has hiv or not, you will not get this disease from unprotected oral sex. Coughing is common (has nothing to do with HIV) and maybe you're going to get a cold or she's a smoker. No risk! Take care