any one here use cycle masks?

[mercalia]

I did some time ago buy some ones intended for industrial use and used them when I have asthma type symptoms. Now only if its very cold air out there.

In an email from BBC this programme snippet discusses the use of them

http://www.bbc.co.uk/programmes/p04nlfyg

[Mark R]

It depends which pollutants you are most sensitive to. If it is hydrocarbons then activated carbon filter masks can help quite a lot. AFAIK currently available cycling masks won't do much against NOx