What’s the most dangerous thing you’ve ever smelled?

Question: What's the most dangerous thing you've ever smelled?
- Keywords:
- Royal Society of Chemistry: Find out more on:
  
  danger
  
  opinion
  
  smelled
Asked by jgb404 to Nicola on 10 Mar 2014.
- Nicola Rogers answered on 10 Mar 2014:
  
  I’ve had a few wiffs of strong ammonia in the past – that was pretty unpleasant – and I didn’t deliberately sniff it – it was opened in the lab close to where I was working – and it is really strong!

Question: What's the most dangerous thing you've ever smelled?