Upon reading your dream. It is showing something that is coming into your life that is trying to attack you. With you shutting the doors and windows in the dream is showing you are trying to keep something out of your life that maybe causing you harm. Does anything come to mind that you have been dealing with lately?
Since you have not responded to the questions. I will go ahead and help with the dream to the best of my ability with out knowing any more personal information.
The dream is showing something coming in your life where you will feel "attacked" relating to you and your family. It can relate to your family values or beliefs. It can be another family or individual that is trying to "refine" or destroy what you stand for or believe in. They will try to attack you in a vulnerable place, which is why your brother's face and your neck were burned. The dream was given to you to for warn you what will take place so you are ready for this attack.