Exo toxins are toxins produced by microorganisms and other organisms that are not part of the host body. They can be either harmful or beneficial to the owner, depending on the effect they have on him.
Exotoxins are proteins or other organic molecules that have the ability to cause disease in the organisms they affect. Some of them are the most dangerous substances known to science. For example, when bitten by a mosquito that contains a toxin called Bacterial Psychrophilic Venom, it can lead to diseases such as malaria