Just spoke to my cousin who was a pax on the this flight. It ws en route stansted. She said the masks dropped when over the Alps and the Flt Crew over the PA said " mayday emergency landing"! She was petrified and assumed a crash landing in the mountains.
She smelt burning but thinking back, the 73 has chemical oxy generators for pax ox. They did an emergency descent and diverted to FRA. She was extremely relieved to hear they weren't crash landing! Shame about the misleading announcement.
The Ox masks can be a bit of a pain (flight crew), poss inadvertent transmission on the PA. Defo not a time that I'd be considering talking to the pax!
Al'ls well that ends well and she's not too worried about her return flt on wed now.