If your sinus symptoms are the result of an allergen, avoiding your trigger(s) is usually the best option. Your doctor can help you find out whether your sinus symptoms are due to an allergen and possibly identify your specific triggers.
Allergens and Cold and flu viruses can trigger the inflammation causing sinus congestion. If your sinus symptoms are due to a cold, the US Centers for Disease Control (CDC) recommends that you do the following to avoid catching or spreading a cold virus3:
Wash your hands with soap and water. The rhinoviruses that cause cold can stay on your hands for a while. Make sure you wash your hands for 20 seconds. If you don’t have access to soap and water, use an alcohol-based hand sanitizer.
Don’t touch your eyes, nose, and mouth with unwashed hands. If the virus is on your hands, it can easily enter your body when you touch your eyes, nose, and mouth with unwashed hands.
Wash your hands after coughing, sneezing, or blowing your nose. Frequently washing your hands is a good habit in general, and especially effective for removing viruses and germs that can cause illness, such as the common cold. When you cough, sneeze, or blow your nose, the virus can get on your hands. Washing your hands right after will prevent you from spreading the virus to surfaces or other people.
Self-isolate at home. One great way to avoid spreading the cold virus to other people is by staying at home while you are sick.