You may wish you had these soon.

Test Set I detector tubes test for hydrocyanic acid, phosgene, organic arsenic compounds and arsine, organic basic nitrogen compounds, and thioether

Test Set V detector tube test for phosphoric acid esters, phosgene, cyanogen chloride, chlorine, and thioether
[link to www.draeger.com (secure)]



Then, you need a CBRN rated mask.
(Chemical, biological, radiological and nuclear)
You can do half face and goggles.
Just remember to buy foil sealed filters and remember you could be going through one or more filters per day.
[link to afcintl.com (secure)]
[link to www.amazon.com (secure)]

Filters are NOT cheap. So most of you will die anyway.

Enjoy!