Biological weapons (BWs) are microorganisms that infect a target host, multiply, and cause clinical disease that kills or incapacitates it. Such microorganisms may be natural wild-type strains or the result of genetically engineered organisms. This includes any living organism (bacteria, viruses, fungi, etc.) or toxins found in nature that can be used to kill or hurt humans. Toxins are toxic compounds produced by living organisms. BW is a toxic substance made from pathogenic organisms (usually microorganisms) or an artificial toxic substance used to deliberately destroy a host's biological process. They can be used to target organisms such as humans, animals and plants. It can also be used to pollute inanimate objects such as air, water and soil. Biologically induced bioactive substances (BDBS) are metabolites (usually, but not always, of microbial origin) that kill or incapacitate the target host. These include not only biological toxins, but also substances that interfere with normal behavior, such as hormones, neuropeptides, and cytokines. Artificially designed biomimetics (ADBMS) are substances designed and manufactured to mimic the effects of biologics. Nerve agents and their relatives (pesticides) function by specifically binding to receptors on specific cell-type target organisms (eg, people with blonde hair and blue eyes). However, as technology advances, these definitions become ambiguous as we learn to chemically and genetically manipulate biological toxins to improve their efficacy and yield. For example, if Botox is unstable but can be chemically modified or genetically engineered, for example, B. while mutating the gene or fusing it with another molecule to maintain lethality. Stabilizing makes it a much more powerful weapon. Biological weapons, also known as bacterial warfare, are acts of war that use bacteria, viruses, fungi, or biotoxins to kill or incapacitate humans, animals, or plants.