I never heard that. So I can’t explain it!
Let us know if you figure it out
Well, I find a lot of websites promoting it for colds and ‘flu; but no promotion by actual physicians, nor anything from the ‘Great God SCIENCE’.
(Of course, the stuff costs a couple of bucks per bottle, and I don’t think that it’s ‘patent-able’.)
Here are some links:
https://earthclinic.com/remedies/hydrogen-peroxide-therapy-benefits/colds-flu/
https://www.simplyandnaturally.com/put-hydrogen-peroxide-in-your-ears-to-stop-cold-and-flu/
(I’m not a doctor, don’t play one on TV, and to the best of my memory have never stayed in a Holiday Inn. Use at your own risk. I just wanted to get my ears cleaned out, and became curious about other purported uses for H202 when my doc told me to do this and I happened to look it up :-)