the mucus in the nose traps dust
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actually mucus which are secreted by the mucosal layer are are helpful for preventing the dust particles entering in our nose.the entry of dust particles can cause problems to our respiratory tract
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As bacteria, allergens, dust, or other harmful particles come into the nose, the mucus traps them. Mucus contains antibodies, or enzymes, which kill unwanted bacteria and viruses. The mucosa lining also includes cilia, or tiny hair-like structures.
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