I think you're going off on a tangent.Would the FA have charged him if it was a French insult?
It's possible that in some countries just waving you're hand under your nose and saying 'you stink' could be considered racist towards some ethnic groups, because of history and culture in that country. If that was what was alleged (it isn't) then there could be a complaint for the FA to consider based on the offence taken by the player from another country - but as I say, that's a tangent, because Bong clearly isn't saying that's all that happened. It seems obvious to me that Bong is claiming he said something that is racist in this country.