Luckily my two Springadors are gun dogs. If they hear a bang they go into pick up mode. I feel sorry for the dogs that these bangs and crackles it scares. It must be terrifying. Turn the TV up I guess ?
I think with Albert it’s a protective thing, he goes berserk if we are downstairs and they go off, but last night we were in bed and he was quiet, but if he hears one when we are our out he pulls to get home, strange.
Normally when dogs bark at fireworks it's because it's a loud noise they don't understand and if they can't fathom it out they can become scared. If he's in your room to him it's a safe place so nothing for him to worry about