> A colonel of the National Police who prefers to remain anonymous points to an initial chemical analysis from a laboratory in Kinshasa. It has found that bombé includes a mixture of different substances like tramadol, dolarene, nitrile, ampicillin and, in some cases, traces of heroin.

So do we know that the elements from the car exhaust filter are.. the active ingredients? Or just there for a certain je ne sais quoi?