Like I said, it is not the corexit that is the problem, it is the oil that combines with the corexit. All the symptoms which are attributed to the corexit are symptoms of benezene poisoning. I’m not saying that there wasn’t a whole lot of concern about using so much corexit. There was a great deal of concern, but the bad weather helped by churning the seas and dispersing the clouds of oil laden corexit molecules.
The only problem with that scenario is that the EPA has also been routinely measuring air and water for benzene, and the concentrations found are nowhere near high enough to cause those kinds of symptoms. The levels detected rarely exceed 1ppm, which is NOT enough to cause the acute poisoning type symptoms you are referring to. At 1ppm, the only effect long term is a very rare type of cancer, which won't show up in the exposed party for many years after the exposure.