1. Not necessarily have to choose an expensive mask.
If you are financially burdened to buy a KF94 mask, a cheap and breathable KF80 mask is sufficient. The most important purpose of wearing a mask is to reduce the amount and velocity of saliva that protrudes when splashing. In order to prevent the spread of the virus it is important to filter out the droplets rather than the virus particles themselves. KF80 filters out 80% of the ultrafine dust below 2.5 micrometers. However, most of the droplets that carry the corona virus (COVID-19) are more than 5 micrometers in size. This means that most of the droplets can be filtered out with a KF80 grade mask. Some people still ask if microparticles can leak into the tiny gaps in the mask filter. To answer that question, the amount of virus so delivered is extremely small. If the total amount of virus can be reduced, infection does not occur. Therefore, proper blockage of the saliva can prevent the spread of the corona virus.
2. Don’t wear the mask once.
Some people say that eight hours is the effective time of the mask. But that’s just the standard in dusty workplaces. More importantly, most commercial masks are for fine dust. It is not designed to target COVID-19 drops. When the fine dust mask is wrinkled or passes a day or two, the filtering effect using static electricity is weakened. However, the ability to filter saliva droplets remains largely intact, even when the fine dust filtering effect is diminished. Therefore, if the mask is not damaged by the naked eye, use for more than a week can help spread the corona virus. When it’s hard to find a mask on the market these days, there’s no reason to replace the mask every day with a new one.
3. Wear your mask thoroughly when you are indoors rather than outdoors.
It is unlikely that the virus will spread through the air outside. Therefore, masks should be used thoroughly in confined spaces such as offices, elevators, cars, and subways. In particular, it is extremely wrong to take off your mask to communicate well to others during a conversation. COVID-19 multiply in the upper airway mucosa rather than in the lungs. Therefore, not only coughing, but also a situation where the saliva pops out while speaking, is dangerous to the other person. Even if you feel stifling, you should wear a mask when you speak at close range.