Smith-Schuster won't practice Wednesday due to an illness, Matt McMullen of the Chiefs' official site reports.
Smith-Schuster now has two more days to return to practice ahead of Sunday's game against the Bengals, but if the wide receiver is able to play this weekend, he'll continue to be a key cog in Kansas City's passing game. Meanwhile, Kadarius Toney (hamstring) will also miss practice Wednesday and looks like a far less certain bet than Smith-Schuster to make it back for the Week 13 contest.