Source: The Great Interpretation of Dreams (Ibn Sirin)
Wearing dirty Ihram indicates committing a sin, corruption in intention, or non-acceptance of Hajj or Umrah.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
Wearing dirty Ihram indicates worry, grief, and illness.
Source: Signs in the Science of Expressions (Ibn Shaheen)
Wearing dirty Ihram is interpreted as worry and sin.