I live in Edmond which is a suburb if Okc. What I can confirm is the weather patterns have been off the charts for the last two months. 80's and the next day 30' degrees. Everyone is talking about how weird it is even for here. This is daily. Also there is a nasty upper respitory going around along with the flu. We all uave chalked it up to the weather. I went and researched this topic and symptoms of poisioning due to gases do fall in line with a continual low grade release of hydrogen sullifide release. Also you lose sense if smell pretty quick
There are three reports available on google about this issue since 2014 in Oklahoma. The chem trail are extra heavy in recent months I thought it was an attempt to manufacture a winter season. They have closed three schools for weeks in smaller areas due to the flu and pnemonia outbreak. May not be related but is a bit interesting.