The 8.1s in my boat had steel exhaust manifolds with SS elbows, And yes it was the SS elbows that leak at the welded joint.
This happened to my friend's boat and he had to due a valve job from the leak.
The way he found it was he filled up the elbow with water and put it on a paper towel over...
Talking to my sister today that works in a school were they are not allowed to carry pepper spray in the school.
She said they all carry Wasp spray on them and no one in the school says anything about it, As it is not a weapon.