It should be noted that before the smurfs became an
animated cartoon they had their own
comic, drawn by
belgian illustrator Peyo. They made their first
appearance in
Johan and Peewit adventure in
1958.
Another interesting fact is that smurfs are described as "three apples high" while simultaneously living in mushrooms. Thus we can deduce that in Belgium, either
the apples are very small, or the forests are fraught with humongous mushrooms.