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Lungs generally don't clean themselves. If you are a smoker and have tar in your lungs, you will NEVER get rid of it, it will only get worse. But you clean your lungs by coughing. This gets rid of any foreign material. If you have blood in your lungs, the blood will be absorbed into your body again, but if will never be cleaned completely. Also, if you have swallowed something and it has gone to your lungs accidentally, you may go to a doctor will will give you anti-biotics so that the food wont spoil and you prevent an infection. Why what happened?

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14y ago
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12y ago

All the oxgyen goes it to you and then the blood clears it!

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Q: How do lungs self clean?
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