Two kinds of masks can be seen in life, one mask is the dust mask for industrial use and another is the medical mask for hospital use. These two kinds of masks are applied in different places, medical masks are used in hospitals in order to prevent the spread of diseases and infections; while industrial dust masks are mainly used to prevent environmental pollution, such as the pollution of dust in the air, or the pollution of toxic chemicals in the workplace, which are the places where industrial masks are applied. The structure of these two masks is different, medical masks have the effect of strict filtration of bacteria and viruses; while industrial masks are mainly used for dust control, and can also be strictly isolated and filtered for very tiny particles such as PM2.5. In fact, viruses and bacteria are also tiny particles, and tiny particles sometimes tend to exist in the form of aerosols, regardless of the medical mask or industrial dust masks, to a certain extent, have a filtering effect. Therefore, in life, whether with medical masks or dust masks, to prevent the spread of disease, to prevent pathogenic bacteria contamination have a certain role. Medical masks have a protective role in preventing liquid spills, and depending on the use, some industrial masks have the role of preventing liquid contamination, and some masks do not have such a function. Some industrial masks can isolate toxic chemical gases, so they may add activated carbon components, usually medical masks do not need to add these special components. Content source: Dr. You Lai