[pax] There was a BBC radio File on Four programme about fumes yesterday, which my wife made me listen to. Probably a rehash of the World Service programme. Unfortunately it was short on statistics and case follow up so I didn't know what to make of it. A BA flight from San Francisco which diverted to Vancouver owing to behavioural ' abnormalities' with the crew was mentioned without any explanation of any subsequent investigation ( or if any passengers had issues). As a passenger, it was enough to sow seeds of concern but seemed to muddy the difference between acute episodes and long term exposure. Without long term medical statistics comparing crew with the general population it seems difficult to see how this can be resolved.