Quote: That's true, Grimm, but I think that if written properly, a man that can run to the great wall of China and back in seconds, should sense the poisonus gas with his nose and run away before the gas arrives in his lungs, so to speak.
No, because by the time he's noticed the gas, he's already inhaled it and breathed it in. Also, not all gases have a smell to them, so how is he going to detect them?
I wouldn't say that all speedsters are miswritten, what I would say is that their abilities are open to be interpreted to an extent, thus allowing for a little more creative freedom. Written properly or miswritten, as you say, is merely interpretation in my opinion. The only times that someone can be said to be written properly or not is if the creator of said character is the one commenting on it.
