Why Picking Your Nose Is Dangerous…

Many habitual nose-pickers do it because their noses are just too dry. Frequent picking doesn’t fix the dryness.

These people often can improve by hydrating their noses, Otto says. Saline sprays can be helpful in some cases. Be careful using saline nasal sprays excessively, though – in some cases they can dry out your nose even more when you use too much of the spray, washing away your mucus with the saline.

“A natural oil can rehydrate the nose, instead,” Otto says. “One of my favorites is coconut oil, because it’s natural, it smells good, and it’s not so thick and greasy that it blocks off the airway or gets rubbed all over their nostrils.”

Otto recommends washing your hands, then dabbing a small amount on the inside lining of the nostril to lightly coat it. No need to do this forever – just enough times that the nose can hydrate better and the nose-picking cycle can stop.

Others who habitually pick their noses may have problems beyond nasal dryness.

Those who have septal deviations, making air flow through just one nostril, could benefit from surgery. And frequent nosebleeds and/or infections in the nose could signify other problems, so it’s important to see your doctor if you’re suffering from either.
https://wexnermedical.osu.edu/blog/how-harmful-is-it-to-pick-your-nose