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Snot is your slimy protector.

While your body is continuously creating mucus to fight off germs, it ramps up production when you’re sick.

Its sticky consistency traps bad microorganisms and other unwanted particles, like dust, pet dander and mildew, so they can’t get farther into your system.

https://theconversation.com/why-do-our-noses-get-snotty-when-we-are-sick-a-school-nurse-explains-the-powers-of-mucus-212949
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