Originally Posted by
lomapaseo
This observation is common throughout the many pages of this thread.
Also equally common in everybody's lives
Association does not equal causation.
We await hard statistical validated scientific data to discuss this kind of subjective observation further.
I appreciate correlation isn't causation - I have a degree in physiology and over 10 years experience in pharma before I became a pilot nearly 10 years ago, so understand clinical evidence.
I maintain a log of the events . I am just looking for others experience of such and the idea we draw in the exhaust gases from start up, with associated oil leakage from further down the engine, into the bleed air system as we turn on the packs .
A less glib response would be more appropriate.