Mouth caps for protection from virus and bacteria outbreaks.
Any organism and/or poison from that organism, known to cause human, animal or plant disease.
Biological hazard, what is that? Where can a biological threat come from? Are all viruses and bacteria dangerous? Is it a bird flu, a corona outbreak, did it escape from a lab somewhere? are there many unknown biolabs worldwide, what are they for? There are also well-known people who warn of biological warfare as the new danger. Are they behind it themselves, or do they know more?
Do you want to be sure of protection against these dangers?