Avoid smoking, which can increase the risk of sinus trouble. Experts advise rinsing out the nose twice a day with saltwater to minimize symptoms and flare-ups of sinusitis, including after sinus surgery. Nasal irrigation involves pouring or squirting a saline solution — from a neti pot or squeeze bottle — into one nostril and letting it drip out through the other. Doing so can help thin the mucus, reduce swelling and wash out any germs, allergens or inflammatory cells or proteins from the nose. A 2007 scientific review concluded that adding saline nasal irrigation to standard therapies is likely to improve symptom control in chronic sinusitis.