On 10/05/2019 09:25, Recliner wrote:
Air pollution: Snuff out scented candles and avoid Tube — how to clean your
air

https://www.thetimes.co.uk/article/air-pollution-snuff-out-scented-candles-and-avoid-tube-how-to-clean-your-air-gps5l9s8r?shareToken=43853b15aafb2b53bcc5cd879b454 691


Usual problem with these sort of tests, they are only measuring one type
of pollutant. Tends to lead to simplistic "cures" that only address part
of the problem. It was the same concentration on one pollutant and
ignoring the others that gave us the Diesel Disaster.

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Graeme Wall
This account not read.