My wife will never fly BA (British Airways).
Years ago, coming back from England, there was a horrid stench when it came time to serve the on-flight meal.
Turned out it was mutton (old sheep) on the menu and the odor was sickening in the close confines of the plane. My wife had to barff.
They were wheeling a too wide cart continually up and down the aisle, blocking access to the stinking privies, and she had to use that little bag. That turned my insides upside down.
Truly a devil's flight.