Rashi on Exodus 16:20/רש"י על שמות ט״ז:כ׳

1ויותרו אנשים BUT SOME MEN LEFT OF IT — Dathan and Abiram (Shemot Rabbah 24:10; cf. Rashi on Exodus 2:13).

2וירם תולעים AND IT BRED WORMS — the word וירם is of the same meaning and root as רִמָּה, worm.

3ויבאש AND IT STANK — This is an inverted verse, because first it must have stunk and afterwards have become wormy, just as it is said, (v. 24) “And it did not stink and there was no worm therein — for this is the way of all things that become wormy (Mekhilta).