when exploring with science which practical has let out the worst smell? what does it smell like?

Question: when exploring with science which practical has let out the worst smell? what does it smell like?
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Asked by Ria to Daniela ?, ☣ Danna, Jonny, Juan, Lindsay on 10 Jun 2016.
- Danna Gifford answered on 10 Jun 2016:
  
  I once did an experiment that was growing fungus on rotting meat. For sure that was the smelliest thing I’ve ever done. It smelled like a turkey dinner that had been forgotten about in the fridge too long, then microwaved for about 10 minutes, mixed with poop. It was not nice.
- Lindsay Robinson answered on 10 Jun 2016:
  
  In the lab I always seem to have to use things that smell. I’ve used a chemical called butyric acid which absolutely stinks! You find it in vomit and that’s exactly what it smells like. It’s enough to make anyone sick!
- Jonathan Hunter answered on 10 Jun 2016:
  
  In one experiment I was working with Skatoles which (at low concentrations) smells a bit like Jasmine and (at high concentrations) smells like poo.
- Juan Ortiz answered on 12 Jun 2016:
  
  I used to work with a type of microbe during my PhD that smells like wet earth when is in a small population, but when there are a lot of these microbes together, they smell like rotten meat and no one wants to smell that!!! :S
- Daniela Lobo answered on 15 Jun 2016:
  
  A while ago we made a mutant-virus that we named “The super farting virus”. This is because we created a mutation in the virus DNA that changed its structure to have a chemical group named “thiol”. In chemistry, thiols are known for its sulfur-smell, which are more often recognised in the strong odour of natural gas, resembling the smell of rotten eggs and…farts.

Question: when exploring with science which practical has let out the worst smell? what does it smell like?

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