“雾霾”一词从几年前开始大行其道,PM 2.5也成为了热门词汇之一,出门戴口罩,时刻关注“室外空气质量”指数渐渐成为常态。其实,雾霾不只存在于我们的视野范围之内,除了我们可以看到的灰色天空,感觉到的异样气味之外,还有一个更为可怕的“隐形杀手”——室内雾霾。由于现代上班族每天大约有80%以上的时间在室内度过, The word “smog” began to popularize a few years ago. PM 2.5 has also become one of the buzzwords and goes out wearing masks to pay close attention to the “outdoor air quality” index gradually becoming the norm. In fact, the haze not only exists in our field of vision, in addition to the gray sky we can see, feel the strange smell, there is a more terrible “invisible killer ” - indoor haze. As modern office workers spend about 80% of their time indoors every day,