In May last year I found myself with half a litre of meths, purchased at great expense in Iceland. As it wasn't allowed on the flight home, and as I intended returning to Iceland only a few weeks later, I decided to hide it among some boulders at the airport. Well... on my return... it had gone. So much for that idea!
A German guy pointed out to me... "What's the problem? If they allow vodka on-board, why not alcohol fuel?" Good question... to which I don't know the answer!
One of the headings in the article is "Learn the words for fuel". That's a very good point, but it only gives one example. If you try and use Google Translate for terms like "methylated spirit" or "gas", it's almost 100% certain that whatever words are returned, they wont be the words that local people use! What would be helpful is a list of fuels, with appropriate translations in several languages.