Although the avian flu virus is hosted by birds, some specific subtype might influence different mammals also, including individuals. In a direct way the virus is discharged from infected birds, largely domestic algae however occasionally wild birds can also infect predators, tribal people, etc. You can buy the best disposable masks at https://www.meoair.com/product/meo-x-black/.
With the influenza virus being airborne, the pollution in the atmosphere might be reasonably large, in most cases of outbreak or pandemic proportions. These masks are made on the guidelines provided by the National Institute for Occupational Safety and Health (NIOSH).
According to filtering efficacy, the filters used in the masks drop below 3 categories, namely Sort 95, Type 99, and Sort 100. The proportions of microscopic (0.3 microns broad ) particles filtered from those filters are 95%, 99%, and 99.7%, respectively.
Additionally, the filters have been categorized according to filter efficiency degradation and are therefore tagged as, N (non-resistant to petroleum ), R (oil resistant), and b (oil proof). Each person's mask is analyzed in lab settings before being accepted for sale. However, N95 ones are disposable and can't be cleaned.
Another pair of very strong, protective masks are Powered Air-Purifying Respirators (PAPRs). They're more powerful than N-95 masks in providing greater security. All these are utilized by persons who can't use N-95 masks, such as individuals with facial hair. This battery controlled mask includes a face bit with breathing filters and a tube.