A friend of mine went to glacer national park. I told him to be careful that is grizzly central. He told me he was going to wear bear bells, but changed his mind after I told him that 50% of the time they attract the bears. Also that you can tell grizzly poop from black bear poop by the existence of bear bells in the scat.
Long story short, he resisted my advice for a .44 magnum on chest rig and instead went with bear spray.
Half way through the trip he was unloading a pack and blasted himself in the face with said bear spray. The only water source at his location was a small water fountain. As he was futilely trying to wash his eyes out a ranger ran up screaming at him ”NO BATHING IN THE FOUNTAIN”
When the ranger realized what had happened he rolled over laughing and walked away.
He said it was about 45 minutes before the pain subsided. Worst pain in his life.
Given his capability with the bear spray it's probably good he didn't go with the .44
.