I just want to say thanks for this thread!

I don't cycle and this is the reason why. I seem to be more sensitive of it than others. Or, perhaps, more aware of it.
The reason for this is because my life sometimes contrasts between living in a city and working at sea.

I notice the effects of pollution within minutes and I've come to learn how to avoid the fumes. It's frustrating because when I go on holiday I feel strong and healthy again. But on the drive back it's all back to square one! I remember this especially after a holiday in France skiing and driving back across France - I might as well have not bothered! Now I can consider uprating my `pollen` filter in the vehicle. I'll be searching for info on that now.

A quick offtopic note: I did find info on a filter that cleans air in a room by pumping, and even a 12v one that can sit on a car seat (very expensive at $400ish though). In terms of in the home there are plants that can clean the air ( http://www.care2.com/greenliving/top...eaner-air.html )

I don't yet know what it is exactly that has the greatest effect. It could be the particulates, but it could be the carbon monoxide. Carbon monoxide binds to the red blood cells so that would give a groggy effect. That's the most pronounced effect I notice so that will be the filter I try first.

In terms of what brand to choose?
What is the availability of the filters? I'm looking for something available in both South America and Europe really.

The other thing to think about is how quick these masks are to take on and off. The ones I've tried at work required a rubber tightening; not ideal.

Again, thank you though. I have been unable to cycle because of this problem and it will be great to be able to cycle again.
I don't know what causes my tiredness but hopefully some experimentation with the filters will sort that.

Thank you thank you :-)


edit:: Had a good look and there are no half face masks compatible with a Camelbak, only full face masks... hmm... should get some looks with that!
At least with the bike masks it's clear what it's for.