The current level of CO2 is around 400ppm (parts per million), the optimal level for plant growth is closer to 1500ppm which is maintained in green houses for optimal plant growth. Most of today's complex vascular plants evolved in the last 250 million years ago when the average CO2 level was around 1200ppm. Plants are designed for 1200-1500ppm of CO2 while the Earth did not burn up at those levels.

CO2 is not a pollutant but the gas of live. Without it, all live on earth would disappear. If anything, industrialization made the world greener by increasing the level of CO2.

And then there is Bill Gates developing and promoting technology that would suck out CO2 from our atmosphere.