They are taking this a little too far….
Check it out:

The rollout of the Environmental Protection Agency’s new draft regulation to limit greenhouse gases was accompanied by a brilliant political cartoon that showed a pair of hapless fellows with automobile mufflers protruding from their mouths, apparently to prevent any renegade CO2 exhalations from polluting the atmosphere with their climate-changing carbon halitosis. Call this part of the agency’s 97 percent solution, based on the frequently made claim that the number represents the percentage of scientists who blame climate change on human activity.