According to a study by Amy Mueller and Loretta Fernandez at Northeastern University, you can GREATLY increase the efficiency of a homemade mask by adding a nylon layer on top of it. When my sister first told me about it, I laughed at how ridiculous that sounded, but here's their abstract and it does make sense. More importantly than an extra layer of filtration, it helps to hold the facemask in place - https://www.northeastern.edu/envsen...yReportFacemaskTestingProtocol_2020-04-17.pdf  
If you'd rather read the story from NPR, here you go - https://www.npr.org/sections/goatsa...-boost-protection-from-cloth-masks-study-find
They advise you to cut a tube out of a nylon stocking/pantyhose, and pull it over your head to cover your facemask. The nylon helps to seal the top, bottom and sides of the mask. It doesn't look as "I'm going out to rob a bank" as it sounds.
		 
	
				
			If you'd rather read the story from NPR, here you go - https://www.npr.org/sections/goatsa...-boost-protection-from-cloth-masks-study-find
They advise you to cut a tube out of a nylon stocking/pantyhose, and pull it over your head to cover your facemask. The nylon helps to seal the top, bottom and sides of the mask. It doesn't look as "I'm going out to rob a bank" as it sounds.
			
				Last edited: 
			
		
	
								
								
									
	
								
							
							 
				 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
	 
 
		 
 
		 
 
		 
 
		 
 
		