I was looking at a Shemp video in which he (not a stuntman) has his backside on fire for a really long time. Sorry I cannot recall the title of the short. Even with the best of precautions, it still looked dangerous. I got nervous watching it. Was Shemp or any of the other Stooges ever injured from a stunt?. I have seen them use stuntmen a lot , and other times they are the ones doing stunts. Shemp was fearless.
You're thinking of "Heavenly Daze," where Shemp apparently dies and goes to Heaven; but at the end, he wakes up with his pants on fire because he's been smoking in bed. That
does look dangerous, but I'm sure the pants had some asbestos (or other fireproof material) padding the seat.
There were a lot of Stooge injuries; some of the best-known are Moe's. He broke a rib taking a pratfall off a table in "Pardon My Scotch" (but he got up and finished the scene anyway— now that's a
mensch!). Moe was hurt again in "Oily To Bed, Oily To Rise," when he's trying to unblock a water pump and he suddenly gets a face full of oil out of the spout. The stuff got in his eyes and he had to be treated by a doctor, but once again, he finished the scene; he looks up and makes a pun: "Well, well!"
Curly broke his leg taking a fall down an elevator shaft in "Three Little Pigskins."
I'm sure that some of the other regulars here (Brent? Stooge?) can think of more instances where a Stooge was actually hurt while doing a stunt.
Stooging was serious business!