Dusknoir (especially holding chesto/lum) Taunting Bronzong would counter that pretty well (assuming Dusknoir's partner can kill off Smeargle in 2 turns).
Follow Me Togekiss + any taunter would also work, as would any inner focus taunter. A faster fake out paired with a taunter also works but if Smeargle uses Follow Me instead of Fake Out, then Trick Room is still going to go through.
Double surfs for rain teams, or basically double targetting on smeargle will prevent Smeargle from Dark Voids, but obviously Bronzong will still get Trick Room down.
But yah, I think having at least one priority move in your team is almost a must for VGC.
Follow Me Togekiss + any taunter would also work, as would any inner focus taunter. A faster fake out paired with a taunter also works but if Smeargle uses Follow Me instead of Fake Out, then Trick Room is still going to go through.
Double surfs for rain teams, or basically double targetting on smeargle will prevent Smeargle from Dark Voids, but obviously Bronzong will still get Trick Room down.
But yah, I think having at least one priority move in your team is almost a must for VGC.