The carbon cycle naturally occurs over long periods of time. And it always has, right now the atmospheric building of carbon is at its high and it will mostly stay that way on average for years to come. No matter what we do with society, we will always gradually become "cleaner" with our technology. If you don't believe me, then look at how we replaced coal/gas power plants with nuclear ones over the last few decades.
And the total atmospheric levels of carbon in most areas have been on the decline for the last few years, if you haven't noticed.
Unless we started pumping absolutely everything we had into furnaces all around the world, then China's the country in danger of atmospheric depression/condensing. Of course the carbonic gasses can spread, and that could definitely be an issue. But our temperature levels are fine and will recede come the next few centuries.