To show how ludicrous Liz's answer regarding CO2 is, I will post this answer again. Let's see how long the questions lasts, before being moved.
Let's refresh our understanding of the composition of Air, then you can decide.
As show in the diagram below Air is made up mostly of Nitrogen and Oxygen at 99%.
The remaining 1% is dominated by Water Vapor, with CO2 @ 0.04% being its contribution from the 1%.
Of that 0.04%, 96.775% is Natural with 2.225% Anthropogenic
Now we know that Natural CO2 does not trap heat or cause warming, but Anthropogenic from fossil fuel burning does. So the question is, do you you really believe that a "breath" of fossil burning emitted CO2 can overpower the Sun, Galactic Cosmic Rays, Planetary orbital perturbations and Nature???