Yes, I would pass it on to others, so that they feel the pain and embarrassment we do. In fact, I would take a step further and make it so that it passes from random individual to random individual, but only infects one individual at a time, while making everyone else around them super-fluent and smooth. That way, they will finally feel, if only a fraction of, the pain and anguish that we feel our entire lives. Maybe then, people would think twice about making fun of a stutterer, having felt the pain themselves. Fuck people.