I thought you could use water to fight an alcohol fire. If the fuel was E10 or E15, then its basically a gasoline fire. I don’t know about an E85 fire.
Ideally you want to smother the alcohol fire and not use a liquid. Dliute alcohols will still burn. Water will spread it much like a grease fire. Carbon dioxide SHOULD be able to do it and I don’t know why they don’t use CO2 foam...oh wait...nevermind...I’ll crawl back into my hole and continue to burn gasoline and diesel.
Gasoline floats on water, while alcohol dissolves. There's been gasoline/oil fires on bodies of water (i.e. ship blows up on the ocean) but I never heard of or can imagine an alcohol spill doing the same thing.
Spray a gasoline fire with water, the gasoline just rises to the top staying on fire. Spray an alcohol fire with water and it will dissolve and should at least eventually go out.