Question+2

What things that we do affect the Ozone layer?

Wildfires:

Wildfires release chlorine-containing compounds. Some of these can reach the ozone layer, and cause ozone depletion.

Wildfires consume oxygen, and destroy oxygen producers. Ozone depends on oxygen being present to be made.

Wildfires alter the surface reflectance of Earth's surface (hotter / more absorptive), and loft water vapor. Both of these tend to drive more water vapor into the ozone layer, where it too causes ozone depletion.

Wildfires are also a part of Nature's cycles, biomes depend on some "periodic" wildfire events, so elimination of them will be harmful to those biomes. Most especially grasslands.

Aerosoles:

Aerosols are emitted naturally (e.g., in volcanic eruptions) and as the result of human activities (e.g., by burning fossil fuels). There is no connection between particulate aerosols and pressurized products also called aerosols.

To my third question