Surgical mask is an FDA-approved therapeutic device. It is a disposable mask which leaves gap between face and mask. Surgical mask is used as a fluid barrier to protect the wearer from large fluid particles such as mucous and spit expelled from any infected person. N-95 is an FDA-approved therapeutic device, particularly a respirator. This respirator is a reusable mask which is designed to fit tightly leaving no gap between face and mask. N-95 minimizes the exposure of wearer to the infectious airborne particles and fine dust particles. With 95% filter efficacy, N-95 are the most reliable face masks which can be sued to prevent COVID-19.