Hello, I can understand your concern. You can not get HIV infection if your HIV infected partner did not have the vaginal/anal intercourse with you. In addition, it can be spread via blood route, if you receive blood from an infected donor. You are feeling too worried about it and that is why might be very conscious regarding very small things regarding your health that you may not have noticed otherwise. Foul odor from nose which is not regular might not be a cause of concern at all. You might have congested sinus or crusts formed in your nose. If you keep your nose regularly, you might not face this problem. However, if the problem worsens, you should see an ENT specialist for physical examination. I hope this information helps you. Thank you for choosing HealthcareMagic. Take care. Best, Dr. Viraj Shah