Question

why pure air has no smell or odour​

Answer 1

Answer:

Air is about 79% nitrogen, 21% oxygen, and significantly less than 1% of other gases (carbon dioxide, methane, Etc.). ... Because the concentrations of these “non-odorless” gases are below the human threshold for detection we cannot smell air. Many gases that people think that they can smellactually have no smell at

Answer 2

Answer:

because pure air is fresh. and no mixture of harmful gases