Just guessing, but the excitement of the incident could have released a lot of adrenaline and a stronger blood flow than usual, which could have affected you in that unusual way.
Unless fire emergencies happen often around you, it doesn't seem like you need to plan a kicking style against a future similar event. Maybe you could just do some commonsense thinking about it and answer that question.
Regarding whether a garment might help you keep calm in an emergency, maybe so if it is ridiculous enough. Laughing or being distracted greatly reduces fear and being anxious, so wearing something goofy in an emergency might help calm a person.
Again, though, just like planning a kick style, wearing something particular because some day you think you might need to kick a fire alarm seems like a lot of prep for what should be a once-in-a-lifetime event, unless you aren't mentioning something about how the fire started.