“The chemical blend may make the scent differ between types of insect, so it is hard to describe the general odor, but it is an acrid but somewhat sweet smell,” says Bertone. “I liken it to a very sour, fermenting apple, but other people detect other odors.” On the flip side, Gore says “most people describe it as a peppery odor, similar to coriander or cilantro.” (That’s because one of the compounds produced by stink bugs can actually be found in cilantro.)
— Read more in What Do Stink Bugs Smell Like? Everything to Know About the Odor They Produce at Prevention.