There's a Smurf in my soup

Bigmouth went to the Smurf's Village to get some Smurfs for the soup Gargamel was going to make but the Smurfs made a soup of their own which changed Bigmouth into long-toothed, squint-eyed, hairy blue creature. Bigmouth returned to Gargamel for an antidote but each preparation ended up in a disaster. Gargamel finally turned to Papa Smurf for a formula which would turn Bigmouth to his original appearance.