I recently saw the trailer for the 1965 movie "Strange Bedfellows" in a larger compilation of material from that time. I never thought Rock Hudson was gunged in his career, but the trailer shows him getting both a pizza (I think) and black paint in the face. Here's the trailer on YT, enjoy!
Nice! I didn't know the one you posted, but that wasn't the only time he got messy. Here is a great scene from another movie named "Seconds" by John Frankenheimers, where Rock got pulled into some messy wine making.