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A comment on You Can Just Buy Far-UVC. Parent comment

Re:You Can Just Buy Far-UVC by PaulKeeble on Wednesday January 14, 2026 @04:01PM (#46623344)
We also have found out that Covid decays less quickly in air with high CO2. So highly polluted areas and poorly ventilated ones compound the problem by trapping CO2 in and allowing the virus to survive longer in the air. That is very likely the case for other viruses as well as it impacts the aerosols.
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Re:You Can Just Buy Far-UVC by jefftk on Wednesday January 14, 2026 @05:00PM (#46624294)
That's really interesting; I had thought it was just the high CO2 was a proxy for greater occupancy, but it does look like there is a physical effect.

https://www.nature.com/articles/s41467-024-47777-5

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Re:You Can Just Buy Far-UVC by tehjoker on Wednesday January 14, 2026 @05:49PM (#46625031)
Yes, it's due to changing the pH of water in the air.
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