Dns
A decompression or fume event is not a simple event and if you work for BA you should be careful not to add fuel to this misinformed media fire!
I am well informed enough to say that there was or nothing technically attributed to the aircraft.
I am also well informed enough that any contaminated air or lack of pressurisation affects the whole aircraft and not just the flight deck
The investigation on the aircraft side was completed within 12hrs. With flight data showing no abnormalities.
Pilots are trained to err on the side of caution with any event. I commend the flight crew in the actions they took.