Bakugou's anger and constant adrenaline is his body's way of dealing with his quirk and keeping him alive. Because nitroglycerin can lower a person's heart rate dramatically, so if he's not constantly stressed he would literally pass out. Would also make sense cuz he only started being so angry all the time after his quirk manifested,
Ok guys don't question my book selection. My little brother won't stop bugging me to read a damned book!
So that's why I have weird ass books in my library