The bouda can secrete a disgusting whitish-yellow substance with the viscosity of tar to mark food and territory. As a bonus action, the bouda marks a single adjacent 5-foot space, object, or helpless creature. Any living creature within 30 feet of the smear at the start of its turn must succeed on a DC 15 Constitution saving throw against poison or be poisoned for 1d6 rounds. A creature that makes a successful saving throw is immune to that particular bouda's defiling smear for 24 hours. The stench of a smear remains potent for one week.