Detailed text transcripts for TV channel - CNN - 20180415:09:50:00
When it's used? >> when you look at sarin gas you can see it is used on liquid form. it is put out there and starts to basically turn into this gas. it is colorless, odorless. it's not something you can detect with the naked eye. it makes it really frightens. it can be hard to find enough to actually test. when you test it you have to find it quickly and some times it will break down and you have to find the by-products quickly. you just don't have time for that. >> what about chlorine? how do the effects of chlorine differ? >> it can cause problem for totally different reasons.