Suggest Remedy For Nose Blocks

Hello doctor, my husband claims he has nasal septum deviation. He is paranoid about surgeries that he is refusing to get him checked. During his annual check-up, he had elevated eosinophil count. I don't know whether it is because of the deviation or the EA count, he suffers from severe nose block during the cold seasons and only nasal drops give relief, that too temporarily. He constantly needs to use drops and the nose block doesn't clear unless the climate itself changes. My husband is 36 years old, height is 5 feet 9 inches, and weight is 78 kg. His medical history is uneventful and nothing specific to be mentioned. What do you suggest for this scenario?