KG - I had the same problem last week after my swim, I hopped into the nearby hot tub and after the initial "ahhhhhhh moment" I realized the chemicals were way off...it was like stewing in a chlorine pot. I felt like crap when I got home, I took a hot shower, washed my hair, and used a ton of saline nasal spray to rinse my sinuses. Nothing like having the thing we do to stay fit & healthy make us feel cruddy.