In this article Drs. Olmos and Baba discuss their findings which showed that 3 minutes after spraying participants’ noses with a saline and xylitol spray, they experienced a 20% improvement in airway volume.
Olmos, S., Baba, J., (2019.). Improved Nasal Volume Utilizing Hyperosmotic Saline Xylitol Mixture (Effective Alternative or Adjunct to Decongestants and Antihistamines). EC Pulmonology and Respiratory Medicine 8.5, 444-452.