Nowadays novel coronavirus is rampant, NIOSH N95 mask and other supplies are very short, so although cleaning masks will degrade their performance, it is also a last resort.

Wearing a NIOSH N95 mask is just one way to prevent respiratory infections, which is the most important thing in maintaining a good life. The NIOSH N95 mask should only be worn in special environments, for example, where there are lots of people and there is no air circulation. Of course, the NIOSH N95 mask should be worn when walking in the wilderness to protect against dust and cold, or to move around in polluted air, but it should not be worn for too long. In addition, a NIOSH N95 mask should be worn during influenza season if there is a high number of pathogens in public places.

N95 masks with paper outer and inner layers should not be boiled, steamed or washed as they will decompose the filter media material. A study conducted by Dr. Cai at UT Knoxville found that masks filter less efficiently when cleaned with alcohol or soapy water.

The outer layer of the NIOSH N95 mask often accumulates dust, bacteria and other dirt in the external air. The inner layer prevents exhaled bacteria and saliva, so the two sides cannot be used alternatively, otherwise the contaminated dirt is close to the face of the human body when inhaled, and becomes the source of infection. When not worn, NIOSH N95 masks should be stacked in clean envelopes and folded close to the nose and mouth, not easily stuffed into pockets or hung around the neck.

If the NIOSH N95 mask gets wet with hot air or saliva, it will be much less effective at keeping bacteria at bay. Therefore, it is usually best to prepare some NIOSH N95 mask to replace the cleaning agent that should be used every day. Boiling water should be washed before 4 minutes.

To bake, I'm hesitant to include this method because, despite its simplicity, it assumes that you have a second dedicated oven for this purpose. If not, there is a risk of contaminating the main food in the preparation oven. Researchers at Michigan State University have refined the method using a lab oven, and Dr Tsai agrees that heating the masks for 30 minutes at 70°C (160F) is an effective decontamination method.

Of course, the above is only a must, if the conditions permit, we do not recommend cleaning.