Black Mold is a fungus that is very toxic. If you have an infection from it you will most likely need a fungicide type of Med like Flagal. This can make you very ill by itself. I just went through 2 months of treatment for a nasal fungal infection and it is no fun. Try saline nasal spray in the mean time. This will help with your sinus problem. Do not use the steroid type of spray it will just make matters worst.