@libroraptor @pezmico I didn't know UV lights would be effective. Unless it's designed extremely well and positioned correctly I feel like it would do very little. Do you know more?
But very cool the shop is still following protocol.
UV-C light is pretty high energy light, which breaks down molecules and thus kills off germs.
But breaking down molecules also means it creates free radicals - highly reactive short-lifetime chemical compounds, that seek to react with other things they come into contact with.
This might mean combining with one another in the air and creating entirely new chemicals that have very little with their original source chemicals.
This might also mean damaging your tissue if you come into contact with them, most likely by inhaling.
That smell of freshly baked bread and sweets has a lot of chemicals in it, disassembling those chemicals and re-assembling them in a random way is quite a chemical experiment.
On the other hand, fine enough filters (think HEPA) can remove viruses, and a carbon filter after particle filter can also serve as reactant to safely react with reactive chemicals in air and remove free radicals and VOC.
In a bit longer version: https://www.youtube.com/watch?v=wihMlE7uew8
I am not an expert, but the impression I get is that this is new technology using very specific kinds of UV light:
@dean @libroraptor I also know little about it, but I remember them being part of the #DavosSafe protocols.
I've read they're helpful although probably need a more strategic placement.
I wonder about the effectiveness of this one lamp just standing in the corner of the room, but I guess it can't be worse than not having it.