It does help inside the nose. Then once you kill the bad bacteria you can repopulate with kimchi bacteria. Weird but true. There is research on this! (I have had two nasal brain surgeries and man, those surgeons trash your septum when they are up in there)
Just had lower back surgery. I cant imagine accessing your brain thru your nose. Thats how the Egyptians got the brains out of the mummies, was thru the nose.
I kinda got a lil headache now.