Who's the flavoring manufacture. I would not use flavorings made with ethyl alcohol. Most flavoring made with alcohol are made with a consumable grade grain alcohol and not ethyl alcohol. Ethyl alcohol is a non-consumable grade alcohol like denatured rubbing alcohol. It will not kill you but it taste like crap.
Most rubbing alcohol is made of isopropyl alchohol which is toxic if ingested but a few are made from denatured ethanol/ethyl alcohol. Hand sanitizers are ethyl alcohol based but have additives that make it not fit for ingestion - denatured. Ethyl alcohol or ethanol is grain alcohol, however, there are levels of purity that needs to be met for its use. GNS is beverage grade fit for drinking, made from corn or wheat, and is of the highest purity. FCC is food grade made from either fermentation or synthesized from ethylene. NF grade is meant for topical applications e.g. hand sanitizer. And then there is fuel grade ethanol, needless to say, don't ingest it. If its graded for flavoring,food, drink ethanol is safe, in moderation, of course.