Sure, VX or Sarin are buggers to synthesize, especially if you want them as a binary, but something like mustard or dimethyl mercury is not seriously going to challenge any decent industrial chemist, or even just industrial Chlorine (Pool supply company, industrial gasses supply house), not effective against a soldier in CW gear, but against civilians? (politics.stackexchange.com)
* Salaries for industrial chemists are high compared to other sectors, the survey showed: The median base salary for chemists in industry was $ 90,000, compared to $ 64,000 for chemists in academia. (sciencemag.org)
What industrial chemists did know was that by tinkering with a highly reactive molecule called a phenol they were able to devise countless synthetic chemicals for use in new materials. (discovermagazine.com)