Why does drain water smell foul?

Dear Student, 

Drain water have biodegradable things, waste etc so when microorganisms decompose these things it produces foul / undesirable smell. 
The smell is caused due to Hydrogen sulfide gas.

Regards. 

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Because lakshya bathes in it !! Simple
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Please answer.
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Dear friend
Because it consist of garbage, human excrete, animal dung and decayed things .
This produce bacteria from which smell comes .

Hope it helps you
Regards
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Haaaaa
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The drain water smell foul because all waste collect at one place . That's why drainage blocked .
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Accupressure?is an alternative medicine technique similar in principle to acupuncture. It is based on the concept of life energy which flows through "meridians" in the body. In treatment, physical pressure is applied to acupuncture points with the aim of clearing blockages in these meridians.
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No !

Whosoever comments on me i make his face drown in normal water and at back i shoot him with my fav gun
So her/him body decay and decay.

I assume my heart is black but my not my everything!
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Dear friend
Drain water smells foul because of the presence of chemicals present in soap and detergents which do not dissolve in water and react with organic wastes that enter the water and also because of the reason I told you earlier
Hope this helps
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Take English tuitions man who bathes in drains
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That is becoming worse sarah you can get in trouble!
AND MEAN IT!
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Thats though
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Now its enough!!
Girl dont think you are only smart
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Majak tha ho gaya. Dil pa kio la raha ho.
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Look at the size of your brain !! To get me in trouble is as impossible as hitting ujjwal in the face
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You are gonna pay wait !
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Sara's what do you say?you trouble me? How and why what your problem with me iam ask question you answer wrong but why ?
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What are you looking for?