And they just this weekend decided that maybe they should warn the public who were in close proximity that they should wash their clothing, as a precaution. Only took them a week to do that. :~ [
Initially they could not ID the compound, but now when they know what it is it is easy to detect but it is terrible. https://en.wikipedia.org/wiki/Novichok_agent The Hungarian site gives more chemical info. https://hu.wikipedia.org/wiki/Novicsok
see as well this http://www.bbc.com/news/world-europe-43377698
https://www.mirror.co.uk/news/world-news/nerve-agent-attack-poison-effects-12147202