0 methods that are used to stop a biohazard (= something such as a disease or chemical that may harm people, animals, or the environment) from spreading out of a place or from causing harm: --
The escape of genetically modified pollen into the environment is a major biosafety concern.
The envelope and its contents were placed inside a plastic bag and taken to a biosafety level three facility.
The Professor said that the lab had been complacent about biosafety and that the drains were poorly maintained.
The government's advisory body on biosafety had accepted the company's assurances about the environmental impact of genetically modified crops.