Ridiculous.
The modern day Hungarians are descended from the Magyars, not the Huns. The Huns died out as a people over 1000 years ago and not even a single word of their language is preserved.
They all intermarried...long ago.
A small point, but the Hunnic language was one of original Altaic languages and as such it's remnants are still extant in such languages as Turkish, Azeri, Kazak, Kirghiz, Uzbec, Korean and Japanese.
Legend has it that the Huns were a ravenous people with a particular taste for pastry, and that certain baked goods in Eastern Europe were originally developed to pacify the Hot Cross Huns.