I’ve never heard of that one, but it seems like it could work. We use thieves oil (mostly eucalyptus)

I think nostr:npub1q6ya7kz84rfnw6yjmg5kyttuplwpauv43a9ug3cajztx4g0v48eqhtt3sh first told me he used it for this.

Haven't heard specifically for that but seems like acv works for most things 😂🤷🏼‍♀️

Indirectly, because I know people use it to make fire cider for colds.

Try xylitol nasal spray