Answer: 1. Try Saline (Saltwater) Drops It works best if your kid is under 6 months. Older babies may get fussy when you use the bulb. Squeeze the syringe first.Place the tip ge tly into your baby's nostril.Release the bulb slowly.Wash it with soap and water after each use 2Vaporize Place a cool-mist vaporizer or humidifier in your baby's room to add moisture to the air. It helps clear his stuffy nose.