....which sadly cannot be taken for granted.
One thing I know. Fresh air never came out of an aerosol can, or something plugged into the wall or hung on the mirror in a car, or from anything that can be bought in a supermarket!
I am lucky to live on a sea loch with a forest behind me. For fresh air I open a window, which I do almost every morning when I wake.
I do my best to avoid polluting the air in my home with unnecessary sprays and polishes and chemicals.
If you live in a city, how do you ensure your body gets the clean air it needs?