loft insulation I reckon that will be the next asbestos !
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But could this be where the dangers lie - you clearly identified that all that thick smoke was not the place to be and limited how much you breathed in by walking away, it was an obvious health hazard, and your body told you it was unpleasant, also the particles in that smoke were probably large enough for your body to recognise as invasive and cough them back up.
Can a comparison be made here with asbestos; when they first realised it was harmful they give people face masks to wear, this made it more pleasant to work in the dusty enviroment so people worked hard for longer in thicker dust - the sad bit being the masks did not filter out the really damaging stuff, so in fact the masks made the situation worse.
Now we have DPFs and the fumes from diesels no longer look harmful, it filters out all the stuff we can see, we no longer feel choked by it, we may spend longer breathing in the dam stuff because our bodies are not recognising it as obnoxious and harmful - but are the really minute particles passing through the DPFs and then straight through our lungs into our bloodstream. In the same way face masks made the asbestos situation worse are DPFs making the diesel pollution problem worse.
Who knows what to believe about anything now, the media feeds us nonsense too much of the time.
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This is what I was talking about, but making much of a job of it.
I thought we were all living longer…they need more tax revenue I think by the way if air is so dirty in London why have every thing going on there ie Olympic cup final boat show ,pollution from huge firework displays ha they just want more tax