[5e92cb50239222b]

Roughly speaking, 2× the levels compared to purifier off, if I understand the paper correctly.

Considering that running a purifier lowers my yearly average PM2.5 exposure by approximately 60-80×, I think I'll continue running the purifier. Interesting data nonetheless.

[outworlder]

Apparently, all you have to do is replace the filter, which should be done anyways.

EDIT: and apparently I was wrong.

"Overall, endotoxins deposition in the alveolar region increased regardless of whether the air purifier was loaded with used or new HEPA filters."