It won't take up even close to as much space as the flour. That diesel exhaust also weighs much more than the hydro(1)carbon(12) chains flour is made from, simply because things like N(14)O(16) and metals in the particulate matter are much, much heavier.
I could not immediately find a reference for typical soot exposure.
so, 10mg/puff * 10 puffs/cig * 20cigs = 2g per pack of cigs. so the comment is saying 4-5 packs of cigs worth of soot, over a Year. that's literally nothing.
I'm sorry, but saying the equivalent of 5 packs of cigarettes, smoked over an entire year, is "literally a massive amount of pollution," is not only in bad faith, it's quite literally crazy thinking.
my intention was for facts. I guess by your definition, facts and calculations are "bad faith," and "good faith" is screaming the sky is falling.
here's another comparison. we shed about half a kilo of skin per year. when you cough up a loogie, that's a couple of grams by the way, for that one loogie. that comes from your lungs too.
And sure, weigh out ten grams of sand or powdered charcoal if you're worried about the density. This is an order of magnitude estimate, so a factor of two here or there is nothing.
As far as your question - I'm not sure what you're asking here. the soot statistic is in grams. the statistic for weight of crap in cig smoke is per puff, and is in mg. when you add up the crap in a pack of cigs, it's about 2000mg as the simple arithmetic shows. you are free to google factor/label method, or take an 8th grade science class.