Do they actually work though?
Good question. I mean they do look a bit daft. I just thought what with the smog.
@Señor_Bear can you get on the computer and knock one out for us? (pardon the pun)
I can post one to you. Knocking things out is not my MO
Hold on: https://www.theguardian.com/environment/2014/aug/10/pollutionwatch-air-pollution-face-masks-protection
I wrote to someone at King's about this. And technically, there are people at PHE working on it too.
http://www.breathelondon.org/south-east/cycling
@maveco started
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Do they actually work though?