Not wishing to divert the topic, but it is related to our helath. Radiation. I read some reports in mid-90's conducted by German & Italian pilot unions. They had massive amounts of data that there was a serious risk which needed attention. Evidently the Germans had taken experts into the cockpits and their meters went off the clock at CRZ levels. Meters that were set for ground based workers' exposure levels. Somewhere there is a big carpet under which all that was swept. It was muted that LH might shield the cockpits, but if the pax found out there would be an uprising. This, and the latest fumes issue; the response afforded by CAA's and goverments is drisery. It's too costly & inconvenient, so lets forget about it. The mega bucks spent on other less important but higher profile ground based issues is a joke. Often a complete waste of tax-payers' money, but a good vote winner.
Cynical? Damned right!