User blog comment:DinoTaur/Welcome to Prof. Dino's Aurology Class!/@comment-25814498-20160218235631/@comment-25814498-20160311222816

No, no I didn't. I said that aura was being condensed around Gon's fist, not that they were freely floating in the air. Gon released his aura before condensing it around his fist while charging Jajanken.

Though this does make for another theory; aura is actually suspended in the air at all times and Nen users are able to manipulate it at will. I'm not saying I agree with it, but.