"For some reason, dust keeps appearing! That's the cause!"

October 19, 2017
It was aired yesterday and I got it
"For some reason, dust keeps appearing! That's the cause!"
It was all amazing information and I didn't know anything about it.
http://www9.nhk.or.jp/gatten/articles/20171018/index.html
The rebroadcast will be on Saturday, October 10 at 21:0 a.m.
I highly recommend you see it.
To summarise:
It has been said that dust contains viruses, bacteria, mites, pollen, etc., but the most common is by far fiber fragments. Other than that, food scraps, tissues, skin fragments, dirt, and soil are held together by static electricity on fiber fragments... this is the true nature of "dust".
For years I wondered, "Where on earth does all this dust come from?" and now I have a much clearer answer.
In addition, we have a device that measures static electricity, and when we use it, we find that static electricity of about 100V is commonly present on the human body, walls, and even floors.
Although it wasn't mentioned on the program, it has been said among knowledgeable practitioners that composite flooring generates more static electricity than solid wood flooring, and vinyl wallpaper generates more static electricity than painted walls or paper wallpaper.
During the program, the mystery of why a room was thoroughly cleaned and then found to be covered in dust the next day, even though it was closed off inside, was solved.
The result was "dust on walls and doors."
Just the flow of air will generate static electricity on the surface of walls and doors. Naturally, a certain amount of air is flowing, so static electricity is inevitably generated. The punchline was that the culprit was dust that had accumulated on the walls and doors over the course of a day falling onto the floor. However, I didn't know this either... It was useful information for our company, which uses a lot of plastered walls, paper wallpaper, and solid wood doors.
There was also a method introduced to reduce static electricity. Just by washing dishcloths and rags with fabric softener, the static electricity was drastically reduced on anything wiped with them. I thought this was revolutionary, considering that static electricity is generated when wiping with a regular rag.