With sinus and allergy season in full swing, the coronavirus pandemic is causing more hesitation for allergy sufferers who would normally go to a doctor or hospital for treatment. “Sinus and allergy season is here,” Beven said. Some foods to consumeAntioxidants help shield cells from oxidative stress. Bioflavonoids enhance the action of Vitamin C and supports blood circulation, which can aid in fighting allergies, viruses or arthritis. These help keep the gut healthy, which is important since 80% of immunity resides in the gut.