Often you have the ability to check for previous fires, chemical issues and ambulance transports.

My sister went there once, she said there were mosquitos or horseflies as big as small cars, and some truck drove down the beach a few times a day spraying clouds of chemicals to kill them.I can't get that picture out of my head.

According to him the chemicals can get leached into the studs, can't be treated, and even after the house has had all the drywall replaced they can affect the air quality. 

I have seen 2 very harsh boom busts in my state in the last 40 years as well as a few small ones.

Sorry if I came across as harsh, but I am a believer in, "If we don't police our own, someone else will do it for us."  

Trucking, construction of drilling pads, pipe, testing, drilling mud, chemicals, casing, etc. 

I wouldn't risk having major chemicals in a place I had to reside or rent out.

He didn't represent me well at all.The seller had his own listing agent.Interesting to read how some comments are harsh only on presumption.

That is a chemical that makes you feel good and relaxed.

Just make sure to clean it well after you are done and use the chemical provided to store it between uses.