The Carpenter Bee stings by inserting its stinger into the skin and injecting venom from a venom sac using the muscles around it.
Carpenter bee stingers are small, pointed barbs at the end of the bee’s abdomen that inject the bee’s venom into the skin. In the abdomen of the bee, venom sacs contain toxic venom that causes bee sting reactions and symptoms. 
When Do Carpenter Bees Sting?
Carpenter bees rarely sting, but will do so readily if they feel threatened. A carpenter bee is a non-aggressive bee, which means that it will not go out of its way to sting humans or other animals. However, if a carpenter bee feels threatened or is afraid, it will sting in order to protect itself.
Most carpenter bees seen by humans are males, who often dart about and buzz loudly to scare humans away from their nests. These bees may appear frightening, but they do not possess stingers, which makes them entirely harmless to humans.
Generally, people are unlikely to encounter female carpenter bees, who can actually sting. Due to the fact that they tend to stay near the nest to guard their eggs, it is very unlikely that you will be stung by a carpenter bee. 
What Do Carpenter Bees Sting?
In most cases, carpenter bees sting humans and other predators that threaten their nests. In the event a carpenter bee feels threatened by another creature, such as a human, animal, or pet, it will land on that creature and quickly insert its stinger into its skin.
Following this, the carpenter bee injects venom into the skin to cause an allergic reaction that prevents animals or people from interfering with the activity of the bee.
Carpenter bees prefer to sting smooth, hairless flesh, but they will sting animals with large amounts of hair if necessary. Carpenter bees are essentially willing to sting any creature that threatens their nests or lives.
Can Carpenter Bees Sting Multiple Times?
Carpenter bees are able to sting multiple times due to the fact that their stinger is not barbed, as it is in the case of honeybees.
As opposed to the honey bee’s stingers, which are equipped with tiny barbs that are pulled off of the honey bee’s body when it stings, the stingers of the carpenter bee are straight and smooth. Therefore, carpenter bees can sting multiple times without losing their stinger and dying.
Since carpenter bees can sting multiple times, they can appear to be more dangerous than honey bees. However, staying out of their way and allowing them to carry out their daily tasks is the best way to avoid being stung by a carpenter bee.
What Is Carpenter Bee Sting Made Of?
Carpenter bee stings consist of two components: the stinger and the venom. Carpenter bee stingers are small, pointed appendages that stick out of the bee’s abdomen and inject venom into the sting site.
Carpenter bee venom is a liquid containing several ingredients that produce the localized allergic reaction associated with bee stings.
Do Carpenter Bees Deliver Venom Through Their Stinger?
Carpenter bees deliver venom through their stingers, which is toxic, meaning they are quite painful when they sting. It is important to note, however, that carpenter bee venom is not toxic enough to kill a human.
Is Carpenter Bee Venom Toxic?
Among the compounds present in carpenter bee venom and all bee venom are melittin, apamin, histamine, hyaluronidase, and phospholipase A2. Combined, these compounds cause the reaction that carpenter bee stings are known for.
Melittin is a chemical that causes red blood cells to explode and blood vessels to expand. It is this chemical which constitutes the majority of the dry weight of carpenter bee venom, which is primarily composed of water. A bee sting is primarily painful due to melittin.
Apamin is a compound that degrades nerve tissue to increase cellular sensitivity. As a result, the carpenter bee venom is more toxic by making the nervous system more sensitive to the venom in general.
The substance histamine is responsible for causing inflammation and capillaries to leak, which is what results in redness surrounding a carpenter bee sting.
By degrading cell tissues, hyaluronidase allows carpenter bee venom to enter cells more quickly, allowing the venom to spread to surrounding areas more rapidly.
Phospholipase A2 causes inflammation and pain by combining with melittin to form bee hemolytic factor. In combination, these two substances cause bee stings to be painful and swollen.
What Does a Carpenter Bee Sting Look Like?
A carpenter bee sting looks like most other bee stings. In most cases, carpenter bee sting reactions result in a round, swollen area at the site of the sting that appears redder or pinker than the surrounding area.
Depending on how severe the reaction is, hives or welts may also appear near the area of the carpenter bee sting.
While most carpenter bee stings are relatively mild, those who are allergic may experience more severe reactions. There are cases in which entire limbs may become swollen after being stung, or severe hives and rashes may develop a long distance from the sting site.
What Does It Feel Like to Be Stung by a Carpenter Bee?
Initially, carpenter bee stings can cause intense pain and then fade into a dull ache that may last for a few days to up to a week. Carpenter bee stings are similar to most other less severe bee stings, such as those caused by honey bees.
How Long Does a Carpenter Bee Sting Hurt for?
The most severe pain associated with a carpenter bee sting typically subsides within five to ten minutes, but the affected area may remain sore for up to a week. However, the lingering pain associated with a carpenter bee sting is much less severe than the initial burning and itching.
Is a Carpenter Bee Sting Dangerous?
There is rarely any danger associated with a carpenter bee sting, and most people only suffer a minor allergic reaction that is localized to the area in which the bee stung them. Carpenter bee stings are only dangerous if they occur on an individual or animal who is allergic to bee stings.
The sting of a carpenter bee can be extremely dangerous and even deadly for someone who is allergic to bee stings. In some individuals, these stings can cause anaphylactic shock, characterized by swelling of the face and throat, nausea and vomiting, and even death, if left untreated.
Symptoms of a Carpenter Bee Sting
Typically, the first symptom of a carpenter bee sting is severe pain at the site of the sting. As a result of this, swelling and redness are often present in the area of the carpenter bee sting. In some cases, swelling may extend well beyond the site of the sting, encapsulating an entire arm or leg.
As a carpenter bee sting heals, there is itching and pain at the site of the sting, although these symptoms are not as severe as those experienced during the initial sting.
There may even be swollen, red hives or rashes on or near the affected area. All of these symptoms are relatively normal responses to being stung by a carpenter bee.
However, if someone is experiencing anaphylactic shock, they should go to the nearest emergency room and administer their Epipen if they possess one. 
The symptoms of anaphylactic shock include swelling of the face and throat, difficulty breathing, nausea and vomiting, as well as hives that extend beyond the area of the carpenter bee sting.
Can a Carpenter Bee Sting Cause Death?
For the most part, Carpenter bee stings are harmless and rarely cause death. Carpenter bee stings only result in death when an individual is allergic to bee stings. An individual may suffer from anaphylactic shock in this situation and may die as a result.
Due to the ease of avoiding carpenter bee stings and the fact that they rarely cause death, most humans do not need to be concerned about carpenter bee stings and should not kill some bees for fear of stings.
How to Avoid Carpenter Bee Sting
Staying away from their nesting sites and not interfering with their daily activities is the best way to avoid being stung by a carpenter bee.
Carpenter bees will sting if they feel threatened, so humans should avoid handling them or getting in their way while they are foraging. In general, it is not difficult to avoid being stung by a carpenter bee.