It wont hurt and it will surely calm them down.
Bulldogs are calm and very gentle dog.
what you should do is sound proof your basement then when the fireworks start put your dog down there and it should keep it calm.
Walk with him/her or play with him/her. If this does not work try giving him/her treats or food to calm them down. Or it might just be a puppy thing. If your dog gets to be at least 5 years old and still that same hyper puppy check the question "What do you do when a dog's too hyper?". I have an answer with some more tips and tricks on how to calm down your dog.
I'll pray for your friend and his dog.
you say bad dog and put he or her in his or hers bed!
If your dog is having a seizure, first calm down, it is very rare for a dog to die. When your dog is having a seizure make sure he/she is somewhere safe.(No Corners or sharp things) After when the siezer is done pet your dog to make he/she calm. Seizures happen often for dogs, it's just a stress overload. If your dog is having more than 3 seizures a month you probably need to go to the vet. The vet will give your dog a anti-nerve pill which should stop it from happening so often. Hope this was helpful:)
Scaring your dog does not cause a seizure. However, in dogs who already suffer from seizures, stress can bring on a seizure, so if you scare your dog, the stress from being scared can make the dog have a seizure.
try to separate them trust and believe it works
Unfortunately, yes, it is possible for a young dog to have a seizure and die either during the seizure or just after the seizure is over. You need to take your dog in to be seen by your Veterinarian. Medications can be given by your Vet to control the seizures. Each time your dog has a seizure, brain cells are destroyed. Take your dog immediately to a Veterinarian.
Neutering very commonly "calms a dog down", but there are no guarantees in that, of course.
A dog that is suddenly falling down and poops and pees on themselves may be having a seizure. A person should take the dog to the vet as soon as possible.