I also think it's uemc
But my reason is different, it contains 2 vowels whereas all others contain only 1 vowel.

Even I would say that there should be some hint.
If there is no hint and it's an open odd one out, all the people who opt for the correct answer (no matter what reason, as long as their reason is unique and first to appear) should get the prize.

Like in this case, if uemc comes out as the correct answer, we have 2 people who chose uemc with different reasons: xpi0t0s and myself

what do others (including Priya and Shabbir) think?

Priya is again caught in mess
And I thought Priya was going to post the new question after the morning coffee?
priya: What timezone do you follow?