Regardless of whether the building is concrete or wood, it will have plastic: interior decorations, exterior cladding or siding, fittings, insulation, polymeriz

Regardless of whether the building is concrete or wood, it will have plastic: interior decorations, exterior cladding or siding, fittings, insulation, polymerized paint on the walls and ceilings, synthetic carpeting on the floor, furniture and personal property... You won't die from spreading flames, flames spread slowly; instead, you will very quickly die from toxic smoke from burning plastic. The toxic smoke which will spread equally well in a concrete or wooden apartment building.