Hello, Sinus infection with congestion & asthma cough are indicative of an allergy reaction that could be triggered by smoke, pollution, fumes, paints, pollen, etc or stress, anxiety or depression. You are suggested to get clinically examined by an ENT, get X-Ray PNS done to detect sinusitis or deviated nasal septum that is causing you discomfort. In the meantime, you can take steam inhalation & non sedating antihistamines. You may need antibiotics depending upon the severity of your infection. Take immune boosting foods like nuts, garlic, ginger, almonds, red bell pepper, vitamin C, green tea, papaya, etc. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Nupur K, General & Family Physician