The Strange Costumes of the Plague Doctors
openculture.com
openculture.com
Long story short: Most plague doctors did not dress like this. The beak masks may have existed, but the usual plague doctor headgear was something that wouldn't go over nearly so well at a cosplay meeting.
stuff like humors[1] or why a barbershop pole is red/white/blue[2]
[1] - https://www.nlm.nih.gov/exhibition/shakespeare/fourhumors.ht...
2m staff
The miasma theory isn't quite right, but it could conceivably have provided a half decent rubric for designing a working particle filter: at least some unpleasant smells are carried by particles. (Burning incense inside the mask is an example of where this theory might lead you off course.)
I wonder visor opening downwards would provide better protection for most cases and make it more comfortable to wear. That kind of prolonged nose could be designed to slow down the speed of droplets that end and exit. If they were made from hard material they would be easier to clean. (optionally you could add filter with larger volume to make it even more effective)
Surgical- and cloth mask provide low protection to the wearer but give significant protection to others. But people don't wear them properly. You should trim your beard to get good protection, for example.
I think it is too early to make such a claim. If no protection is applied (visor/mask) and no physical distancing is performed, I assume the claim might hold up.
The SARS-CoV-2 aerosol route is still relevant, however. The masks are able to block this a bit while the visors are barely helpful. Hence I wouldn't say that the visors are a solution.
Surgical and cloth masks are not relevant to aerosol question. They work trough gravity sedimentation and inertial impaction.
For smaller particles you need diffusion, and electrostatic attraction. In other words N95 mask that fits well.
Are there no written records testifying the effectiveness of such suits?
Where bubonic plague is primarily transmitted by flea bites, the plague doctor gear is ultimately a personal protective equipment version of the Maginot Line. But it would plausibly offer some protection against contracting pneumonic plague from getting coughed on all the time.
However, these observable effects are often more about managing symptoms and perception than with having any protective or curative mechanism. This is where the you run into problems. A reduction in symptoms does not necessarily correlate well with a reduction in pathogens or other disease processes, so you might have the same (or worse) outcome as without treatment, or might put yourself into risky situations with a false sense of security...
https://www.instructables.com/id/Plague-Doctor-Costume/
In order to make Halloween scary this year, children are ordered to NOT wear masks.
What struck and haunted me about the "science" of Bubonic plague equipment was how so very close those cultures were to understanding the transmission of many diseases (though, ironically, not Bubonic Plague) and the Germ Theory of disease itself.
Quoting (in part) what I wrote then:
> Daniel Defoe's _Journal of the Plague Year_ published in 1722 [2] comes just before Pasteur's experiments confirming the Germ Theory of disease and it, too, is tantalizingly close about the empirical cause of the spread of Bubonic plague. [3]
Humans have come quite a ways toward understanding the science of infectious diseases, but given the many ways diseases propagate, one can't help but wonder how close we are to our 14th-century forbears when looked from the vantage of what we may know in 28th century. (That is, 14th century : 21st century :: 21st century : 28th century)
[0] https://www.metafilter.com/154520/The-Science-Behind-the-Pla...
[1] http://mentalfloss.com/article/49217/anatomy-14th-century-bu...
[2] https://en.wikipedia.org/wiki/A_Journal_of_the_Plague_Year
[3] https://www.metafilter.com/154520/The-Science-Behind-the-Pla...