stink bug
I believe that they release a foul scent that drives predators away.
To protect themselves from much larger predators
Some turtles can't protect themselves with their limb/head so they will urinate a foul urine with a pungent odor in attempts to protect itself.
They don't have any. Instead they use foul-smelling gas to protect themselves, similar to a shield bug.
they are foul-smelling insects
The term applies to letting your dog leave its feces on a sidewalk. It is a violation of the law.
It is a carrion bettle and stink bug
The alleged presence of the 'Bell Witch' was accompanied by a foul odor. The weather turned suddenly foul. Put on your foul weather gear. See the related link(s) listed below for more information:
Some natural predators of shield bugs include birds, spiders, and certain insects like assassin bugs. Shield bugs defend themselves by emitting a foul-smelling odor from glands on their bodies, which can deter predators. They also have tough exoskeletons that provide protection from physical attacks.
The superfamily pentatomoidea (stink bugs) are insects with a scent gland between the first and second leg pair, producing a foul-smelling liquid, used to deter predators.
Earwigs protect themselves primarily through their pincers, or cerci, which are located on their abdomen. These pincers can be used to grasp or pinch predators, serving as a defense mechanism. Additionally, earwigs may hide in damp, sheltered environments during the day to avoid detection by potential threats. If threatened, they can also emit a foul-smelling secretion to deter predators.
foul as in; foul smell: nauseabond, infect, sale foul as in; foul play: jeu deloyal (malveillance)