Everything I have seen related to sulfur emmisions reduction of diesel engines used in international waters referenced the environmental impacts not respiratory impact. There aren't many humans out in the middle of the ocean, the problem being solved was the massive amounts of diesel emissions being pumped into the atmosphere from the international shipping industry.
Dieselgate was a very different problem to solve. VW was caught lying on emissions tests to avoid regulations meant to reduce emissions in populated areas like large cities.
Dieselgate was a very different problem to solve. VW was caught lying on emissions tests to avoid regulations meant to reduce emissions in populated areas like large cities.