Pure Air

Polluted air

Pure air contains around 78% nitrogen, 21% oxygen, and 0.03% carbon dioxide also small amounts of other gases such as argon, methane, ozone, and water vapor.

Polluted air includes harmful gases like sulfur dioxide, nitrogen dioxide, carbon dioxide, etc. and other particulate matter.

Smog is not present.

Smog is present.

Not harmful for human beings as well as animals

Harmful for human beings as well as animals as it causes respiratory problems.