What does air smell like?

Air itself is generally devoid of a specific smell; however, it can carry various scents depending on environmental factors. Fresh, clean air may have a crisp, invigorating quality, often associated with natural settings like forests or oceans. In urban areas, air may carry odors from pollution, food, or industrial activities. After rain, air can have a distinct earthy smell due to ozone and the release of compounds from the soil, often referred to as "petrichor."