The ornamental design for a smokechamberblockingensemble, as shown and described.
FIG. 1 is a side view illustrating a smoke chamber blocking ensemble, according to an embodiment; and,
FIG. 2 is a top-down view illustrating a smoke chamber blocking ensemble, according to an embodiment.
The broken lines in the drawings illustrate portions of the smoke chamber blocking ensemble that form no part of the claimed design. Any unshaded regions bounded by broken lines in the drawings illustrate the bounds of the claim and form no part thereof.