By now, you’ve probably heard that there is shortage of N95 masks for health care professionals trying to deal with the COVID-19 coronavirus pandemic. The shortage has motivated a number of DIY (do-it-yourself) efforts by well-meaning folks to make masks that are not exactly official N95 masks. While the intents behind such efforts are admirable,… Continue reading There is shortage of N95 masks for health care professionals trying to deal with the COVID-19 coronavirus pandemic