Originally Posted by
qcpmsame
Get some wrap around cycling glasses, your eyes are watering, from the cold, dry air that is hitting them as you ride. The lacrimal-nasal duct is channeling all the excess tears, from your eyes, down through the duct, and into your nasal passages. This is what causes that runny nose, if its all clear fluids.
All bets are off if you have either a cold, or any URI, and you are getting ugly stuff in the discharge. (Let the strange replies about this begin, keep it a little civil please.)
Bill
Makes sense. Now that you mention it, the past few daytime rides were very sunny and I wore wraparound sunglasses, which I don't always do. Less of the flood of clear nasal drainage after riding 15-30 minutes.
Onion cutting tears are usually provoked by inhaling the vapors, not from the vapors contacting the eyes. Wearing a dust mask or bandanna helps reduce onion cutting eye stinging and watering. Keeping the onions cold and using a very sharp knife help too.