I would need a more extensive evaluation and examination of you to make any clinical recommendations. Nasal perforations can cause some problems. Holes just the right size can cause whistling. As mucous gets into the hole, the size becomes smaller. The change in size can be the reason for intermittent whistling.
Some holes bother patients with crusting that can be minimized with saline nasal sprays.
Small holes can sometimes be reconstructed with local tissue. Other holes can be occluded by a special plug. Many times the hole can just be left alone. I hope this information proves of some use. If my office can be of further assistance, please let us know.