Just last night just minutes after going outside with Rizzo, someone set off some fireworks right behind my house, needless to say he was inside and in his crate shaking like crazy in seconds. My poor little guy, he's normally not affected by them, as I stated before, but they were so close and went off so randomly they caught him off guard, took me a couple hours to convince him he needed to go outside to potty, but he's back to normal now.
Good luck with Poppy this season.