Originally Posted by
noglider
@
erig007, why do you suppose the air is so full of carbon inside the subway tunnels? Maybe it's brake dust? I do notice a sooty layer on everything. The train motors are electric, so they're not spewing soot. Other factors are that the tunnels are below the ground, so gravity brings dirt in. There are too few methods for the dirt to leave, and ventilation is insufficient to clear it.
I think @
wolfchild is right. Best not to worry about it unless you know it's a problem. And if it is a problem for you, I think the only solution is to move to a much cleaner place.
35 years ago I read that the benefit of exercising outside outweighs the detriments of air pollution. Of course, this can't be true in all places, but I suspect I'm healthier than lots of other New Yorkers.
I'm not worrying about that. Been wearing a mask for years so i have pretty much settled on this. I learned that way that my mask doesn't protect me against everything since i can smell them through the mask, especially car fumes. But when you don't smell rosted chicken, smoked meat or fresh croissant while passing by you know that it works for some at least. (filter everything that it isn't supposed to and the opposite
)
Will upgrade my mask and be done with it (until someone brings the subject back
)