Yeah, I think there is more to this story...
I once sat behind a woman on a plane (thankfully a short flight) who reeked! I thought my cat (who was in a carrier at my feet) had had an accident. But when I checked her, there was nothing there, and the smell went away as we deboarded.
... Until I got to the baggage claim area and the same woman stepped in front of me to grab a bag and that stank hit me upside my head once again. Maybe some combo of bad food and bad hygiene. ... it honestly made me feel ill.
A smell so bad you can see it.