It just says it reduces the effect of a hangover. This could be minimal reduction, and they are using that for advertisingThe hangover is due to you becoming dehydrated, which is a direct result of the alcohol. I don't see how inhaling the alcohol would be any different. You still get alcohol in your bloodstream.
Yes there is, it's called drinking water when you consume alcohol. Try it sometime.I agree. Consuming Alcohol = Hangover. No way around it.