The list of symptoms that have been known to come from diseases spread by Plague-bbits, ranked from most to least common. This will be added to as more of this species is discovered. (And as I think of more, haha-)
Key: Common, Uncommon, Rare, Wacky, Super Rare, Legendary
-Leaking sinuses
-Sneezing
-Drowsiness
-Headaches
-Stuffy sinuses
-Sore throat
-Dry skin
-Fatigue
-Soreness
-Coughing fits
-Dizziness
-Shortness of breath
-Hives
-Chest pains
-Paralyzation
-Vomiting
-Sudden bursts of energy
-Enhanced hunger
-Metallic taste in mouth
-Red spots on skin
-Changing skin colour
-Making everything taste like candy
-Spontaneous chicken transformation
-Short-term memory loss
-Hallucinations
-Insomnia
-Death