Iompaseo,
Organophosphate Poisoning - symptoms and treatment | Dr Myhill
Here's a good list for starters - real pilots don't get sick - they just have 'Mysterious ill's which they can't identify the cause of...until it's too late'
OP's take out your Central Nervous System (multiple system failure) and by definition - we all have different genes and exposures - it's a complete lottery.
One third - 33% are poor detoxifiers and will suffer - if you don't, good for you. I am seriously envious of the 67%.
DB