To see sulfur, when you are dreaming, has the symbolic significance of the observation and the concentration to the details. Sulfur in the dream represents higher level of thinking about something in a logical way. Maybe you don’t trust your competencies and that shows up in your dream. Maybe your subconscious is telling you to trust yourself more. Your intuition and rationality is good state, because of that you should have more self-confidence.
Read more about dreaming of Sulfur in other dream meanings interpretations.