This solution has displaced the mucus, bacteria, etc that was in the sinus. Usually the cilia start to move as a result of the pulsation and this is why 20 or more minutes later the saline comes out. This is very desirable. It shows the saline went where you want it to go. I have always found when I have a cold, a steam inhalation with eucalyptus was helpful.
Saline spray is very helpful for dry sinuses and to moisten the membranes.
A. Yes, daily saline spray can be helpful to prevent sinus problems. Close the windows in allergy season. If the windows are open the pollen hits the nose. For allergy sufferers the body thermostat doesn't work well and any chilling starts the cascade of sneezing, etc. Q. Some sinus sufferers seem to have the worst time at night, waking up with pain over the eyes and nose.