Obcus

Obcus is a fruit bearing tree native to the planet Kheeban. Its fruits are sweet and tasty, though seldom eaten due to their side effects. When eaten, chemicals in the juice of the fruit react with the digestive enzymes of most creatures, rapidly producing large quantities of gas. The gas itself isn't harmful, though the reaction usually produces enough gas to inflate the stomach. This generally doesn't harm veyluu, though it may be extremely harmful or fatal to other races if too much fruit is consumed.