有句俗话:病从口入。是的,许多疾病是由于饮食不洁等原因造成,但是,很多时候病也会从鼻入。病菌、灰尘、花粉等从鼻腔进入体内也会影响身体的健康。戴口罩正是可以有效阻隔这种途径的一种方式。口罩到底有什么样的作用呢?1口罩的作用很多人在路上行走时,遇到难闻的气味、尘土都会用手掩住口鼻,似乎可以阻挡气味、灰尘进入鼻腔,其实,空气来自四面八方,无孔不入,这种做法基本起不到任何防御作用。戴口罩有用吗?大家想让口罩担当空气过滤、净化的重 There is a saying: sickness from the mouth. Yes, many diseases are caused by poor diet and so on, but in many cases, the disease will also start from the nose. Bacteria, dust, pollen, etc., entering the body from the nasal cavity will also affect the health of the body. Wear masks is just one way you can effectively block this path. Masks in the end what kind of role? 1 role of masks Many people walking on the road, encountered unpleasant odor, the dust will cover your nose and mouth, it seems to be able to block the smell, dust into the nasal cavity, in fact, the air comes from all directions, All-pervasive, this approach can not achieve any basic defensive effect. Wear masks useful? We want to mask as air filtration, purification of the heavy