Seeing or coughing up Phlegm in your dreams is a vivid imagery of purging and liberation. Like the body expelling unwanted elements, this symbol can be a metaphorical cleanse of pent-up sentiments and feelings, reflecting a newfound freedom in expression. However, mucus can also be sticky and hindering, suggesting obstacles or entities in your waking life that may be keeping you from moving forward. In the realm of dreams, mucus isn't just an oddity; it's a potent sign of the ongoing battle between self-expression and external restraints.