Positive meaning
Foul vapors in a dream may symbolize a process of purification and getting rid of negative emotions. You might be preparing for a new beginning that will bring refreshment to your life. This dream suggests that you are capable of transforming difficult situations into something positive.
Negative meaning
A dream about foul vapors may reflect your frustration or fear of something surrounding you. It could indicate that you feel overwhelmed or trapped, and have a sense that something is suffocating you. This dream may serve as a warning to reflect on the situations that burden you.
Neutral meaning
Foul vapors in a dream may represent a mixture of emotions and feelings present in your life. Their neutrality suggests that this dream is more a reflection of everyday concerns that may not have any significance, but rather illustrate your inner comfort or discomfort.