Our
set of lungs act as gas exchange chambers supplying our body with
fresh oxygen and getting rid of carbon dioxide in our body to
survive. The nose together with the nasal cavity is our first
stage air filter, but it is not good enough to filter minute dust
particles and other pollutants.
With
vehicles, we can go to an automotive supply store and buy a replacement
filter if it breaks, but not with lungs, once you loose one its
gone forever! So it’s up to us to keep it healthy.