If Knowles did try to blow up Vanowen S.C., he would have used nitrates, and if he'd used nitrates, the bomb would have filled the air with an odor as pungent as it is distinctive.
Si Knowles trató de hacer explotar a Vanowen S.C hubiera usado nitratos, y si usó nitratos la bomba hubiera llenado el aire con un olor amargo y distintivo.