In the past, I have flown several times (as a passenger) to Italy on EI-CSZ (Arrivederci Alitalia) and nothing special ever happened at the Italian airports.
I was on a Bergamo-Charleroi flight wednesday, it was EI-DLN "Bye bye Baby" and not many passengers (if any) paid attention to what was written on it. Most of them were Italian or Belgian and don't even know who is that Baby.