Bioweapons, or biological weapons, are harmful agents like bacteria, viruses, or toxins used intentionally to cause illness or death in humans, animals, or plants. They can be spread through various means, such as air, water, or food, making them particularly dangerous. The use of bioweapons is prohibited under international law, specifically the Biological Weapons Convention. These weapons can be developed from naturally occurring pathogens or engineered in laboratories. Some historical examples include the use of anthrax and smallpox in warfare. The threat of bioweapons raises concerns about public health and global security, prompting nations to enhance their preparedness and response strategies.