Looking over the methods, I don't think this specific study included measurements of similar conference density. That said, I would suppose that most conference

Looking over the methods, I don't think this specific study included measurements of similar conference density. That said, I would suppose that most conferences wouldn't generate much PM10. Off the top of my head, you could probably compare it to a poorly ventilated kitchen. For scientific rigor I will edit to include this nuance. PM10 tends to be associated with more acute problems, while PM2.5 is associated with more chronic problems [0]. PM10 remains a closely monitored public health reporting metric. Taken together however, the notion that vaping is "just water vapor" is fraudulent (and knowing the historical context of the tobacco industry, knowingly so [1]). I will allow myself to complain that there are many threads in this comment section that make very broad statements that are unsubstantiated by science. Though I suppose it's the cross to bear for scientists arguing in good faith. [0]. http://www.euro.who.int/__data/assets/pdf_file/0006/189051/Health-effects-of-particulate-matter-final-Eng.pdf http://www.euro.who.int/__data/assets/pdf_file/0006/189051/H... [1]. https://www.wnyc.org/story/gleaning-truth-merchants-doubt/ https://www.wnyc.org/story/gleaning-truth-merchants-doubt/