Yes
On a recent flight back from Malaga to Gatwick, a number of passengers had the misfortune to sit close to an incredibly smelly toilet. Whilst waiting for baggage afterwards, a number of them were complaining about it saying it was their worst flight ever, etc and I have to say, the toilet smell had lingered onto them
Thankfully I was in CE
so I was oblivious to all this commotion until later on