In the last century, humanity has achieved numerous technological advancements. These innovations have made life more convenient and affluent, while significantly expanding human living spaces. Among them, refrigerators and air conditioners, which use Freon gas, have completely transformed human dietary habits and living environments. In 1974, it was discovered that Freon gas could destroy the ozone layer in the Earth’s stratosphere. By 1982, a hole in the ozone layer was detected over the Antarctic stratosphere, and satellite observations also revealed thinning of the Arctic ozone layer.