I agreed that I thought SU wouldn't work in today's internet, and I clicked on the cloudhiker link thinking I'd be met with SEO trash, but I ended up on this post: https://dynomight.net/ikea-purifier
Which was a great post and now I understand more than I did about how air filters work...more complicated than I'd thought.
Which was a great post and now I understand more than I did about how air filters work...more complicated than I'd thought.
Maybe I should give cloudhiker a try.