Other home remedies for our pilot with blocked sinuses to add to his list. Add one teaspoon or sea salt and one teaspoon of colloidal silver in 8 oz of water. One reader uses this concoction to rinse her sinuses every night for about a week and she has found it useful in relieving the blockage and cutting down on her sinus infections. Another remedy, perhaps more appealing than the one before, is drinking tea made with fresh ginger and manuka honey.