CO2 doesn't actually make objects cold. It's a common misconception that CO2 is inherently cold.

Here's why:

* CO2 is a gas: CO2 exists as a gas at room temperature and pressure. Like any gas, it can be heated or cooled to different temperatures.

* Dry ice: Dry ice is solid CO2, and it feels cold because it's below the freezing point of water. This is why it's used for chilling things like food or drinks. However, the coldness comes from the phase transition of CO2 from solid to gas, which absorbs heat from the surroundings.

* CO2's role in climate change: CO2 is a greenhouse gas, meaning it traps heat in the atmosphere. This leads to global warming, not cooling.

In short, CO2 itself doesn't make objects cold. The coldness associated with CO2 comes from the phase change of dry ice (solid to gas), which absorbs heat from the surroundings.