When you are wearing a homemade mask, you should keep in mind that you are not wearing the mask to protect yourself, but to minimize the spread of virus particles to others.
The CDC recommends wearing a face mask that covers your nose and mouth when leaving your home for essentials like groceries and prescriptions. Some types of masks are not intended for reuse, but there are a few things you can do to sanitize them, upgrade filtration and extend their lives. Here are some strategies that will help you get the most out of your mask, and keep you and your family safe.1. Treat your mask like a biohazard.
Even if you feel no effects, you may be asymptomatic. You may also want to avoid thick materials like vacuum cleaner bags. A material with high resistance will force air to escape through routes around the mask fabric creating a void. Also, breathing through a thick mask can be tough on your heart and lungs. This could put elderly people and those with preexisting cardiopulmonary conditions at risk.
Phillip Clapp, a postdoctoral researcher at the Center for Environmental Medicine, Asthma, and Lung Biology at the University of North Carolina, has been testing various homemade masks. When he studied three layers of cotton fabric, he saw that the material itself had efficiency of around 90%. However, once he wore the mask made from that material, its efficiency dropped below 50%.
Preliminary results from a study by researchers at Northeastern University show that sewn fabric masks can in some cases approach the filtration efficiency of commercially produced masks.
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