Which of the vapors produced from the following combinations of chemicals are dangerous to...?

In sum: #1 involves sulfur--do not use. #2 involves sulfur--do not use. #3 involves phosphorous--could explode. #4 involves sulfur--do not use. #5 involves sulfur--do not use. #6 involves sulfur--do not use. #7 involves sulfur--do not use. ANY sulfur in gas form can kill you.