Why Do Some Farts Smell So Bad?

Sometimes your farts stink, and sometimes they don t—and it s not because of methane. Hosted by: Michael Aranda ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters: Kevin Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Patrick Merrithew, D.A. Noe, Charles Southerland, Fatima Iqbal, Sultan Alkhulaifi, Nicholas Smith, Tim Curwick, Alexander Wadsworth, Scott Satovsky Jr, Philippe von Bergen, Bella Nash, Chris Peters, Patrick D. Ashmore, Piya Shedden, Charles George ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- 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 https://qz.com/929920/do-you-contaminate-your-environment-with-harmful-bacteria-when-you-fart/ 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 ---------- Images: https://www.flickr.com/photos/43344700@N07/6802069536/ 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