I’m surprised you haven’t had a type specific answer but I’d hazard a guess there will be a type specific Smoke, Fumes, Fire Checklist..there will be one.
Whilst we are waiting generically they usually work through some form of fault finding, isolating in some sequence the likes of IFE, lighting, Galley electrics, A/C packs....If you are looking at needing into smoke removal then the checklist would probably demand a descent to a sensible altitude and then ventilation to the ambient atmosphere as appropriate and in a manner specific for the aircraft type, you wouldn’t ideally want to be depressurising at high level.
Fingers crossed someone will be along with the Airbus details shortly.