“This is a unique situation,” she told reporters. “We don’t have information of a similar situation where this happened, right? So we’re going into unique times, and we have limited information.”

According to the U.S. Environmental Protection Agency, methyl methacrylate can cause lung and skin irritation, headaches, coughing and wheezing, and has been suggested but not proven as a possible cause of colon and rectal cancers.