Homemade mask might work

 

Emerging Infectious Diseases Volume 12, Number 6, June 2006 

Simple Respiratory Mask

Virginia M. Dato,* David Hostler,* and Michael E. Hahn*

*University of Pittsburgh, Pittsburgh, Pennsylvania, USA

 

 

 

 

 

 

 

Please see original post here if you are interested in more detail, or Simple Respiratory Mask for the original paper.

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