Fascinating Tristan.....
It seems to me that all OPs (and VOCs and CO) are pretty bad things to have in the tin can cauldron of airliner cabins but solutions do exist to prevent the contamination of paying pax and unwitting crews (although the av world is a slow-adopter).
However, an issue not often discussed here, is that the longevity and bio-accumulation of these toxins in our environment may have rather worse long-term effects than previously thought.
Is it possible to stop using them altogether in aviation oil?
We seem to be seeding our world from above, rather like a crop-duster....contaminating all life on earth slowly. Or is that science fiction?