Thanks for the humor, but a gentle correction if I may: We don’t need CO2 to live but plants do. We will die from starvation.
Technically, every carbon atom in your body--the basis of every fat, protein, sugar, and nucleic acid--came from carbon dioxide "fixed" by plants. Essentially, we are made of carbon dioxide.
In addition, we use carbonic acid--the acid carbon dioxide makes when it is dissolved in water--to regulate the pH of our blood. We get sufficient quantities of carbon dioxide from the metabolism of our cells to regulate our blood pH quite adequately, and change the rate of breathing to keep the concentration of carbon dioxide constant in our blood.
The extra CO2 will breed a master race of super plants. If anyone survives the Global Warming, the plants will get them. Al Gore warned us! It is already happening in Florida.