Well, I gave him some acv in a sippy with water and honey.
It's a darn good thing I taste-tested it before I gave it to him. I wanted to spew it out myself lol.
Then I poured that out and put just a tiny bit of acv in the sippy with water and the honey that was already in the sippy. It tasted just like honey.
I'll post results tomorrow, but about 10 minutes after he drank some, his nose did de-congest a bit.