Both were eentually diagnosed with bronchiolitis obliterans. Diacetyl, which produces a butter flaor, was the main suspect although the CDC team said other flaorings may hae played a role.

• 他们最终都诊断为梗阻性细支气管炎。联乙酰可产生黄油香精，是引起这种疾病的主要原因，尽管疾病控制和预防中心说其他的香精可能也起作用。