"My video camera footage shows my chickens were perfectly fine before they started this burn, and as soon as they started the burn, my chickens slowed down and they died," she told WKBN. "If it can do this to chickens in one night, imagine what it’s going to do to us in 20 years." - from this article https://www.foxnews.com/us/ohio-residents-fear-train-derailment-poisoned-air-ground-report-animals-dying
"Among the substances were ethylene glycol monobutyl ether, ethylhexyl acrylate and isobutylene were also in the rail cars that were derailed, the list shows.
Contact with ethylhexyl acrylate, a carcinogen, can cause burning and irritation of the skin and eyes, and inhalation can irritate the nose and throat, causing shortness of breath and coughing,"- from this article - https://abcnews.go.com/US/toxic-chemicals-train-derailed-ohio-originally-reported-data/story?id=97080179
I don't imagine we will ever really know the truth about it as they don't allow journalists to do their jobs anymore in the US.