How do beetles smell?

Answer 1

Stink bugs eat plants, mostly produce, though they may also eat other bugs. They are what ruin tomatoes and orchards. The brown marmorated stink bug was imported to help deal with nuisance pests. However, they are an invasive species themselves.

If you mean the Pinacate Beetle, which also gives off an odor, they eat mostly fresh and decaying vegetation.

Answer 2

Not all beetles hate the same smells. Common scents to use to repel beetles include citrus, citronella, and garlic. The smell of some herbs are distasteful to beetles including smartweed.