Mystery #2Tier 1allergies and the nose
Why does a tiny grain of pollen set off sneezing and itchy, streaming eyes?
A single grain of pollen is far too small to see. It drifts off a flower, floats along on the breeze, and lands in your nose. Next thing you know you are sneezing your head off and your eyes are red, itchy and streaming. How can something that tiny cause such an enormous fuss?
Your guess
Why do you think a speck of pollen makes you sneeze and your eyes water?
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