I think you might be right about using flavors with alcohol as their base. I was wondering if ethanol/ethyl alcohol ever converts into diacetyl at any given condition? I did read up that it shouldn't be a problem with diacetyl inhalation as we intake very little amounts of it but it's good to know if that's the property I will end up with in my mixes. Another thing I would want to know is about how much flavor percentage would be used for alcohol based flavoring compare to PG based flavoring? I am really interested in checking the RF's line and see if that's something that might do me justice. Your comment was really helpful. Thank you.