What does a dream about saltpeter mean?
A dream about saltpetre -potassium nitrate, sodium nitrate, calcium nitrate or ammonium nitrate- symbolizes that you are going to experience sadness over a longer period of time, or that a certain change is going to increase your feelings of uneasiness.
Read more: The meaning of common dreams: what do your dreams say about your subconscious?
What others say about this dream
Every dream is a direct, personal, and meaningful message to the dreamer.
– u/RadOwl on this conversation on Reddit