ZYCLONB comes to mind as well, although it has developed something of a nasty reputation over time. It was originally intended to be used to fumigate enclosed spaces infected with invasive insects.
Regards, GtG
17 posted on 05/23/2015 2:54:19 PM PDT by Gandalf_The_Gray
(I live in my own little world, I like it 'cuz they know me here.)