Gauze masks do not isolate viruses. Experts did this test in a laboratory setting during SARS, and a mask with 12-18 layers of gauze stacked on top of each other had a particulate matter filtration rate of only 96%, which is equivalent to an N95 mask, or a 95% filtration rate for a disposable mask. In this case, it is impossible to carry a dozen layers of gauze masks. Normal N95 or disposable medical masks have a filtering effect on the virus, this mask has a layer of non-woven fabric in the middle, there is static electricity inside that can adsorb the virus, and can achieve the effect of removing the virus. Use should pay attention to can not get wet, once wet, this medical mask will lose the role of filtering viruses. So when using the mask in daily life, pay attention to see if it is broken, contaminated, water. If the water vapor is large, it is necessary to replace the mask in time, so as to achieve effective adsorption of viruses and reduce the morbidity of the patient’s protective effect. Source: Dr. Yurai