[LilFarmer]

A very good research paper on homemade masks IF you do not access to commercially made masks: “Paper and discussion: Simple Respiratory Mask January 9th, 2008, 07:57 PM Emerg Infect Dis. 2006 Jun; 12(6): 1033–1034. doi: 10.3201/eid1206.051468 PMCID: PMC3373043 PMID: 16752475 Simple Respiratory Mask To the Editor: The US Department of Labor recommends air-purifying respirators (e.g., N95, N99, or N100) as part of a comprehensive respiratory protection program for workers directly involved with avian influenza–infected birds or patients (1). N95 respirators have 2 advantages over simple cloth or surgical masks; they are >95% efficient at filtering 0.3-μm particles (smaller than the 5-μm size of large droplets—created during talking, coughing, and sneezing—which usually transmit influenza) and are fit tested to ensure that infectious droplets and particles do not leak around the mask (2–4). Even if N95 filtration is unnecessary for avian influenza, N95 fit offers advantages over a loose-fitting surgical mask by eliminating leakage around the mask.” https://flutrackers.com/forum/forum/personal-family-professional-emergency-preparedness/medical-supplies-incl-ppe/28487-paper-and-discussion-simple-respiratory-mask

[LilFarmer]

Sorry I don’t know why that didn’t parse:

Emerg Infect Dis. 2006 Jun; 12(6): 1033–1034.

The US Department of Labor recommends air-purifying respirators (e.g., N95, N99, or N100) as part of a comprehensive respiratory protection program for workers directly involved with avian influenza–infected birds or patients (1). N95 respirators have 2 advantages over simple cloth or surgical masks; they are less than 95% efficient at filtering 0.3-μm particles (smaller than the 5-μm size of large droplets—created during talking, coughing, and sneezing—which usually transmit influenza) and are fit tested to ensure that infectious droplets and particles do not leak around the mask (2–4). Even if N95 filtration is unnecessary for avian influenza, N95 fit offers advantages over a loose-fitting surgical mask by eliminating leakage around the mask.

https://flutrackers.com/forum/forum/personal-family-professional-emergency-preparedness/medical-supplies-incl-ppe/28487-paper-and-discussion-simple-respiratory-mask