Stuffy sinuses? Here are some things you can do now to feel and breathe better: Hook up a cool-mist humidifier or vaporizer and feel the relief a bit of moisture can provide. Try adding a couple of drops of peppermint or eucalyptus oil to the water. If you have neither humidifier nor vaporizer, take a steamy shower or try using a saline nasal spray or doing some nasal “irrigation” using a neti pot or nasal syringe. Drink plenty of fluids. Maintaining optimum hydration levels can help thin the mucus in your nasal passages, pushing the fluids out of your nose and decreasing the pressure in your sinuses.