Unless you're wearing it tight enough to leave a mark around your mouth and nose, it's not doing anything for you. My wife, an ICU nurse, spent a year reusing

Unless you're wearing it tight enough to leave a mark around your mouth and nose, it's not doing anything for you. My wife, an ICU nurse, spent a year reusing N95s because people who didn't need them bought them all up, only to wear them in a way that didn't seal properly and provided no protection.