Could cough Dust allergy. Your advice!

I hope you are doing well. I am reaching out to seek your advice regarding my ongoing health concerns. I have a history of dust allergy and underwent nasal septum surgery in 2016 due to a deviated septum on the right side, which had completely blocked airflow. After the surgery, I felt fine for several years. However, over the past year, my symptoms have gradually worsened. For the last 1-2 months, I have been experiencing recurrent cold and cough, along with frequent viral infections. While antibiotics provide temporary relief (typically for 10-15 days), my symptoms tend to return shortly after. Over the past week, I have also been experiencing: Persistent headache, especially on the right side and top of my head A sensation of pressure around my eyes and forehead Mild dizziness and discomfort After taking antibiotics, my symptoms have improved, though I still have a mild headache on the right side. I am concerned about whether this could be due to a bacterial or viral sinus or any.