Sometimes your farts stink, and sometimes they don’t—and it’s not because of methane.

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Sources:
https://www.thrillist.com/health/nation/why-do-my-farts-smell-so-bad
http://www.uib.no/en/news/95058/why-do-we-fart
http://www.npr.org/sections/thesalt/2013/12/10/250007042/chowing-down-on-meat-and-dairy-alters-gut-bacteria-a-lot-and-quickly
http://www.npr.org/sections/thesalt/2014/04/28/306544406/got-gas-it-could-mean-you-ve-got-healthy-gut-microbes
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3264926/
http://ajpgi.physiology.org/content/272/5/G1028
https://www.chemistryworld.com/news/explainer-the-chemistry-of-farts/2500168.article
That time surgeons farted into petri dishes for science
https://www.thoughtco.com/chemical-composition-of-farts-608409
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1121900/
http://aem.asm.org/content/43/1/227.long
https://pubchem.ncbi.nlm.nih.gov/compound/methanethiol#section=Top
http://www.sciencedirect.com/science/article/pii/S1570023209003559
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Images:
Cardiac operating room
https://en.wikipedia.org/wiki/File:EscherichiaColi_NIAID.jpg
https://en.wikipedia.org/wiki/File:Candida_albicans.jpg
https://commons.wikimedia.org/wiki/File:Methanethiol-3D-vdW.png
https://commons.wikimedia.org/wiki/File:Hydrogen-sulfide-3D-vdw.svg
https://commons.wikimedia.org/wiki/File:Dimethyl-sulfide-3D-vdW.png
https://commons.wikimedia.org/wiki/File:Sulfur.jpg

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Why Do Some Farts Smell So Bad?

About The Author
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