To dream of something or someone that’s dirty represents a low or untrusting opinion you have of someone. It may also reflect low standards, unworthiness, or someone that cheats. You may not want to be involved with a person or situation.
Alternatively, seeing someone dirty may reflect sexual promiscuity.
To dream of yourself being dirty represents low self-esteem or feelings of being unworthy. You may feel that you are not good enough or that other people may see you as underhanded. Feeling that people don’t want to be involved with you.