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Learn how your respiratory system functions when you smell, talk, laugh, and breathe. Discover the role of mucus in trapping dust and germs to protect your lungs.
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respiratory system by: Chance England
Your respiratory system is at work when ever you smell, sing, talk, laugh, or breathe many parts or the respiratory system are coted with mucus. If your wondering what mucus is it is a sticky thick fluid that traps dust germs and other things that may be in the air.