CarcinogenS?
The only significant carcinogenic pollutant is, AFAIK, particulate carbon.
That is going down rapidly with particulate filters, and I doubt you would
breathe much in unless you are standing really close.
How may of us eat burnt toast and charred steak?
Or lean over a pan of frying bacon? (Get that whiff of nitrosamines!)
DAS
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For direct contact replace nospam with schmetterling
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