Nasal cleansing - Mayo Clinic video
Mayo Clinic: What can you do about that runny nose and nasal congestion? Medications are one option, but so is nasal cleansing.
Treatment Options for Allergic Rhinitis (AR) and Non-Allergic Rhinitis (NAR) (click to enlarge the image).
SinuSurf (nasal saline rinse with surfactant) associated with loss of smell "for months to years". Discontinue use (PDF) http://goo.gl/awQUP
Is Rinsing Your Sinuses Safe? FDA replies: http://goo.gl/XL5bJ