I been in bear cou8ntry my whole life been hunting and killing bears for over 50 years.
I just killed one Tuesday in season with a lic.
I have been trained with spray and one never recommends it for use with out a firearm back up against a armed opponent.
Bears are always armed and are faster and strong then almost any human.
The reason to use spray is if one is worried about harming the bear.
Other wise learn and use a good firearm you have much better chance of survival then with spray.
The bear doesn’t to bad so sad.
Wes Larson can pound sand with is piss poor advice;
The only “ spray” I’d have any faith in would be hairspray and a lighter.