apestoso
/apesˈtoso/ · B2 · adj
stinking, smelly
🦨 a-PEST-oso: as bad as a pest, from peste, Spanish for stench
From apestar, to stink, which comes from peste (plague, and in Spanish also a foul smell). Add -oso, which means full of, like famoso or peligroso. So apestoso is full of stench.