Sour gas is bad ju ju.
I worked for the company that laid the pipelines from the first 7 wells to the plant in the sour gas field south of Jackson, Ms. Down at Piney Woods, Ms. That's the place where they found a whole crew dead one morning. They didn't know the sour gas was down there and drilled into it during the night. That hole is on a hill and the well bore is contained in a small cinder block building. You could walk out into the woods around the site and see small animal skeletons all over the place.
When we were doing tie-ins at the wells or plant, there was a man with a monitor on site. If he said to go, we had to go upwind at least 200 yds and wait until he said we could come back to work. Sometimes it was a few minutes and sometimes we'd set there all day.
