“Pronounce it “Oy-ro” not “Your-o” That’s the way the Europeans say it, so use their universal pronunciation and no one will know where you’re from.”

I presume you’re referring to the currency used in several European nations, the Euro. Actually, ‘euro’ is pronounced according to the rules of each different country’s language; there is no one way that “Europeans” pronounce it. There is certainly not a ‘universal pronunciation’ of it; that would absurd given that there are 27 member states in the EU and most of them do not share languages. And in the UK we definitely pronounce it ‘yoo-roh’!