This paper - https://www.nature.com/articles/s43247-023-01050-7 https://www.nature.com/articles/s43247-023-01050-7 - suggests the use of sulphur dioxide is not

This paper - https://www.nature.com/articles/s43247-023-01050-7 https://www.nature.com/articles/s43247-023-01050-7 - suggests the use of sulphur dioxide is not trivial, it is linked to about 800,000 deaths per year and that ocean going shipping is responsible for "403,300 premature deaths a year and 14 million cases of childhood asthma". Seems far from clear to me that we can just limit the use close to shore as the author argues, especially in a landlocked sea like the Mediterranean.