Boiler emissions - steam or smoke


Really stupid question but walking along a terrace of house, with a friend, we saw the flues sticking out with white stuff billowing out. He said it was like your breath on a cold day but is it or is it smoke? Whichever is it dangerous for pedestrians to inhale?
Ken
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"Ken" <Reply to NG only> wrote in message

It is condensation, just like your breath on a cold day. There will be various pollutants in the mixture as well, but these will be far safer than the smoke off a coal fire or cigarette.
Adam
Adam
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