C. F. Keil and Franz Delitzsch on Numbers 11:33

Num 11:33

But while the flesh was still between their teeth, and before it was ground, i.e., masticated, the wrath of the Lord burned against them, and produced among the people a very great destruction. This catastrophe is not to be regarded as “the effect of the excessive quantity of quails that they had eaten, on account of the quails feeding upon things which are injurious to man, so that eating the flesh of quails produces convulsions and giddiness (for proofs, see Bochart, Hieroz. ii. pp. 657ff.),” as Knobel supposes, but as an extraordinary judgment inflicted by God upon the greedy people, by which a great multitude of people were suddenly swept away.