Why do you have dark yellow mucus coming out one nostril and clear mucus coming out the other?

Dark yellow mucus typically indicates the presence of infection or inflammation, as it often contains immune cells fighting off pathogens. In contrast, clear mucus is typically a sign of healthy nasal function or may result from Allergies or irritants. The difference in color and consistency can occur due to localized issues in one nostril, such as a sinus infection or blockage. If symptoms persist or worsen, it's advisable to consult a healthcare professional.