i had a nasty sinus infection  last week.  I paddled up at route 3 and hole bros on thursday and friday. friday morning i couldnt breath or blow my nose. by night my head wanted to explode. it was terrible.  Ive been paddling there since august and have never been this bad. Usually i get a little bit of a runny noes after paddling there. This is my experience with the Black river. It should be noted that these conditions could result from any fresh water river,pond, lake, stream, etc. Getting fresh water up your nasal cavity could and does definitely cause sinus problems.  Saying this, shoots down my arguement. However, in the past ive never had a major problem with water and my sinuses interacting in a negative way.

o yeah i just remembered the cut on my hip that kind of got infected after that same day. I had a little abrasion/chaffing on my hip that just wouldn't heal.
The Black has something in it.