The N95 respirator has become one of the most coveted items in the world, especially by medical professionals. But how did this seemingly simple mask become the lifesaving tool it is today? From bird beaks to wrapping paper to bras, we follow the curious history of one of the most important defenses in our fight against COVID-19.Learn more about sponsor message choices: podcastchoices.com/adchoices)NPR Privacy Policy)
