The American Lung Affiliation says your lungs already cleanse themselves when you do not expose them to air pollution and smoke. When you can keep away from smoke by quitting smoking, typically air pollution like mud are onerous to keep away from. Many of the bigger particles within the air get trapped by the small hairs in your nostril. Blowing your nostril or sneezing might help rid your physique of those particles.
If the smaller pollution within the air attain your air passages, they keep on with the mucus, the place the cilia work like brooms to comb the mucus and pollution as much as your throat. Then, you may cough up the mucus and possibly swallow it. Ought to some mud particles sneak by your air passages and enter your lungs, cells known as macrophages will seize the particles and transfer up your respiratory system till they attain the mucus and cilia to be carried out. Your lungs even have proteins that bind to any germs to allow them to wipe them out (per Canadian Centre for Occupational Well being and Security).