hubieran inhalado
-they/you had inhaled
Past perfect subjunctiveellos/ellas/ustedesconjugation ofinhalar.

inhalar

Al mismo tiempo, insidiosamente, los terráqueos comenzaron a percibir el perfume, que no era igual a nada que hubieran inhalado antes.
At the same time, insidiously, the terrestrials began to perceive the perfume, which was like nothing they had ever inhaled.
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