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We show that few-percent Okubo-Zweig-Iizuka-rule violating effects in thequark-flavor basis for the $\eta$-$\eta'$ mixing can enhance the chiral scaleassociated with the $\eta_q$ meson few times. This enhancement is sufficientfor accommodating the dramatically different data of the $B\to\eta^{\prime} K$and $B\to\eta K$ branching ratios. We comment on other proposals for resolvingthis problem, including flavor-singlet contributions, axial U(1) anomaly, andnonperturbative charming penguins. Discrimination of the above proposals bymeans of the $B\to\eta^{(\prime)}\ell\nu$ and $B_s\to\eta^{(\prime)}\ell\ell$data is suggested.

Okubo-Zweig-Iizuka-rule violation and B\to \eta^{(\prime)}K branching ratios