[nopassrecover]

At face value I was inclined to agree with you (SO2 causing acid rain and being generally impactful to health through cardiovascular and respiratory issues, damaging mammalian DNA, impacting hormones like testosterone etc.).

However given the strong role SO2 can play in reducing global warming, and that there are even proposals to introduce more SO2 to the atmosphere to achieve the Paris objectives, like most things in our complex interconnected world it gets a bit more complex.

Of course one hopes there are better responses to the changing climate than reactively doubling down on polluting contaminants into the atmosphere when that has contributed to the current mess and we clearly have narrow and incomplete understandings of systemic intervention.

[HPsquared]

It's a bit like the tradeoff of diesel cars: more local pollutants that damage human health (particulates and NOx) but less global warming.