Former Meth Labs

This is an interesting article. HERE. Individually, we may never come across such a situation, but it may make for something to keep in the back of our minds. Probably more so to dismiss the possibility when asked by a customer than anything else.

But, has anyone run into this? What are the signs to look out for?(besides the obvious as noted in the article) Would any of our standard instruments pick up on it? ie(in my case as an example): CO monitor(Sensit P100), leak detector(Sensit TKX), or combustion analyzer(Testo 327-1)?

From my highly detailed, nearly doctorate level of education regarding meth labs-I watched the first few seasons of Breaking Bad (A great show)- I know that the lab rats can use a number of different chemicals in the production, but how might some present themselves in a residual manner or while deteriorating?