In my last airline the crews were pretty good at entering any "smelly sock smell" in the tech log.
I never saw or heard of an aircraft being grounded (AOG).
So should sometime in the future the link to organophosphates & medical complications be proven. I wonder how the airlines & the individuals who released the aircraft fair in the inevitable compensation lawsuits. This post intentionally controversial so please discuss.
The crews may well have been "pretty good at entering any 'smelly sock smell', but in any subsequent "inevitable compensation lawsuits", one imagines the first question asked of those claiming compensation may well be along the lines of: "Captain Bloggs, having detected that unusual smell, why didn't you follow the smoke/fumes checklist, and immediately don your oxygen mask? That would have provided you with significant protection, would it not?"
Protecting yourself is in your hands. Nobody else's!