User blog comment:Bennlimos/HxH Questions & Thoughts Discussion 8/@comment-5780397-20141015164354/@comment-5780397-20141015170152

5) He can float on his smoke, and that's good for a Sea Hunter, but I think he developed his Nen ability because his lung capacity made it more effective: not being a Conjurer, he would have a hard time creating more smoke, but with his lungs, he can breathe in and out massive amounts of it rather quickly. From this point of view, it looks the best ability he could choose to me.