@mrpunan @FinchTH @Rose_Marie_Holt @RidleyDM @jvmlost @coolpix_jpg @cre8iverenewal @ToshiAkima 1. You can't eat/drink with a mask.
2. Comfort level of a good mask vs no mask is less
3. Some people can't wear masks
4. No outlets, carrying a small plug-in was a (probably misleading) model of scaled filtration
5. Outdoors you don't need masks. Why not have clean air indoors?

@mrpunan@FinchTH@Rose\u Marie\u Holt@RidleyDM@jvmlost@coolpix\u jpg@cre8iverenewal@ToshiAkima 1。你不能带着面具吃/喝东西。
2、好的口罩与没有口罩相比舒适度更低
3、有些人不能戴口罩
4、没有插座，携带一个小插件是一种（可能会误导人的）按比例过滤模型
户外你不需要面具。为什么室内没有干净的空气？