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    like when you inhale in water through your nostrils it burns inside on the lining bit further up if you get me :confused:
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    Inside is where the smell receptors are. So this maybe is why.
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    hmm, good question... I'll just sit here and wait for informative replies.
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    Chemical reaction? try de-ionised water
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    Try milk instead.
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    Its to do with osmosis in the mucous membranes.

    Dont ask me how I know, but if you use an isotonic solution (1 teaspoon of salt in a pint of water) it doesnt hurt at all.
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    it dont burn for me coz im wel ard
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    Because you touch yourself?
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    But the nasal passages do have a high degree of nerve endings.
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    nasal passages....
 
 
 
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