I bet you can do almost as well by irrigating your nasal passages with a solution of hydrogen peroxide
No notes in these studies about the participants taking daily VitD3, Vit C, zinc and quercetin
maybe but I dont trust that it wouldnt damage my nose
I use PVP iodine with saline
or i dilute it a little with saline and swab my nose
I have a Dr appointment with an ENT soon and going to ask if it will damage my nose