Strong fuel fumes reported in the cabin?
I once had strong fuel fumes reported in the cabin by the cabin crew. They could not identify the source & the concern was that it was coming from a fuel leak or a spill in the cargo holds.
After landing one of the pax mentioned to the F/A as he left the aircraft that they may have been looking for his fuel soaked jumper. Turns out he was a refueller. I don't know why he didn't identify himself & the jumper earlier.
Things are usually not as clear cut as they would appear in hindsight. Pontificating on this site does not really address the issue in such a manner that all can learn from the event & perhaps handle things better if it ever happens again. Rather, it shows a lack of experience or a mindset that is set in concrete, or both.
Aviation eventually catches up with those who feel they can do things by rote, as things never happen exactly the same way twice. Those who use a blend of their own experience, the experience of others, SOP's & systems knowledge to manage both normal everyday situations & non-normal situations as they occur, tend to do better throughout their aviation careers.