Intelligent Putty Happy - The transparent yellow putty with colorful smiley confetti smells deliciously like bubblegum. Of course, this putty also has all the basic properties of Intelligent Putty: It stretches like gum, it bounces like a ball, it melts like porridge, it can be torn like paper, it never dries out, it is odorless, BPA-free, gluten-free, and it doesn't stain your hands.