Perhaps later a more sophisticated study will come out that reveals that people who are not clever enough to hide their secret nose picking from researchers are at elevated risk.

I remember somebody with ALS explaining the indignity of somebody else having to pick their nose for them - at that point, I finally accepted everyone does it and made my peace with the guilt instilled in us as children.

Some people are just wet. My sister blows her nose several times a day and I've never needed to blow mine without having a severe respiratory infection.

Wash your hands, get dry mucus out, wash hands again.

As the old saying goes: “There are two types of people: those who pick their nose, and liars”

Not only everyone does it, nosepicking is instinctive behavior.

Everything our body does for us (with maybe a handful of exceptions) is "healthy" for us, for survival of our genes, or best case, both. :)

Nose picking and nasal carriage of Staphylococcus aureus https://pubmed.ncbi.nlm.nih.gov/16874648/

Saline nasal spray helps a lot.

Yes