The sinus cavities—hollow spaces located in your bones near the nose and between the eyes—are also located beside the ear canal.
This device can be especially helpful in children or other people who are not able to use the Valsalva correctly.
Treatments for pressure in the ears can be either preventive, such as for a person about to take a flight, or curative, for those who have blocked ears that they cannot pop.
X Mayo Clinic Educational website from one of the world's leading hospitals Be very gentle.
I've tried holding my nose, but only one ear pops.
Simply insert the device into one nostril, close the other, and push a button.