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WHY DOES THE SMELL OF AMMONIUM REMIND US OF URINE? – fox news

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WHY DOES THE SMELL OF AMMONIUM REMIND US OF URINE? – fox news
Ammonium is a chemical made of nitrogen and hydrogen (NH3).Proteins are made of building blocks called amino acids, which are also made from nitrogen and hydrogen.Proteins make up a large portion of the human diet and are converted to ammonium after they are broken down in the liver.Because ammonium is toxic to humans, the body converts it to urea – the main ingredient of urine.Under severe dehydration, the urine of a person can become highly concentrated and the scent of ammonia strengthens.In air conditioning units, the bacteria that live there contain chemicals called keratinases which break down the proteins in the skin cells.As a result, these bacteria produce pure ammonium which is circulated by the air conditioning unit – spreading the familiar smell of urine.
Source:
http://www.dailymail.co.uk/sciencetech/fb-5345351/WHY-DOES-SMELL-AMMONIUM-REMIND-URINE.html?ITO=1490&ns_mchannel=rss&ns_campaign=1490

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