mucus
The word 'purple' comes from the Old English word purpul which derives from the Latin purpura, in turn from the Greek word porphura, the name of a purple dye manufactured in classical antiquity from a mucus secreted by a snail.
If your nose is "running," then you have a mucus discharge. The image is of the mucus running out of your nose so that you need a tissue or you need to blow the mucus out.
Clear nasal mucus or, "snot", is usually associated with allergies. If your nasal mucus is green or yellow you may have an infection and should see a doctor.
If you mean what does purple mean in the Bible, I believe I can answer your question. Purple as a color in the Bible represents wealth or royalty. If someone were a seller of purple cloth it would mean that they are well off financially because of who they are selling it to.
Sinus infection.
You have a viral infection.
mucus build up
Call your doctor
Mucus can sometimes be yellow or if you have a virus it can be yellow with blood spots in it( this could just mean your throat is irritated)
Assuming that you mean mucus from the nostrils, doctors normally prescribe anti-histamines. Apparently production of mucus in the nostrils is attributed to allergens that provoke histamine to produce mucus from mast cells.
i think that purple means love!!