  Whyte used the index theory of Dirac operators and Block-Weiberger uniformly
finite homology to show that certain infinite connected sums do not carry a
metric with nonnegative scalar curvature in their bounded geometry class. His
proof uses a coarse version of the $\hat{A}$-class to obstruct such metrics. In
this note we prove a version of Whyte's result where a variant of the notion of
infinite $K$-area, originally due to Gromov, is used to obstruct metrics with
positive scalar curvature.
