I'm really worried about my husband. He's had this dry cough since last September, and it usually happens right after he finishes eating. It's like he keeps needing to clear his throat. Plus, whenever he's in cold weather, it gets worse. We've seen so many general physicians, but no one can seem to figure out what's going on. We did a chest X-ray and an HRCT in October of 2021, and everything came back clear. We also just checked his IGE levels, and they were at 1071. One doctor suggested he take montair fx for a month. Could you help me understand what might be causing this?