I cannot comment re those who allege lasting harm caused by a certain little 4 jet which has a 'toxic air' reputation; this was not one of those.
I and many others I know have over forty years and many thousands of hours as mil and civil pilots and have never suffered from toxic air inhallation on a passenger aircraft.
Juud has a point which I noticed on my last pax trip EWR>LHR (why not just leave the others feeling cold? - they can always wrap up - you wouldn't want to see Basil down to his boxers trying to keep cool
)
For passengers reading this, when starting engines or passing downwind of another aircraft, it is common to smell ingested paraffin fumes.
For those who have never worked in industry with its smells and fumes it may be worrying but it's normal - unless, of course, your worst fears are realised and the engine really is on fire
