Ann: Firebrick Raises $1 million via Placement, page-31

Yes I have tried it. Didn't do any proper trials, just read the reviews from similar products.

https://www.etsy.com/au/listing/1141496076/macs-100-naturals-providone-iodinesaline

https://cofixrx.com/shopping/cofixrx-antiviral-nasal-solution/

https://triquetrahealth.com/products/nasomin-nasal-antiseptic

https://betadine.ca/nasal-spray/

https://www.epothex.com/products/povidone-iodine-nasal-spray-30ml-epothex

https://veritasmedical.com/product/iodine-nasal-spray/

https://viraldine.com/shop/ols/products/1-pvp-i-povidone-iodine-nasal-antiseptic-spray

https://www.immunemist.com/