SBSP Kwarantined Krab [TEMP BANNED EPISODE]

Yes, “Kwarantined Krab” was temporarily pulled from airing and streaming in the U.S. due to sensitivities surrounding COVID‑19:

Nickelodeon removed it from Paramount+ and Amazon in March 2021, citing “sensitivities surrounding the global, real‑world pandemic”

It was originally scheduled for a 2020 release but delayed due to its plot centering on a health crisis and quarantine.

However, it's not banned permanently:

The episode eventually aired in the U.S. on April 29, 2022, as part of Season 12.

It wasn't included in the Season 12 DVD set or initially available on streaming in that region, but it did appear in international markets earlier and later made its way back to platforms

TL;DR:
“Kwarantined Krab” was temporarily removed in March 2021, but it aired nationwide on April 29, 2022, and is now available across U.S. streaming platforms, albeit absent from the initial DVD release.