Up your nose - just be careful

It's not common, but it is dramatic.  Maybe you've read about the brain eating ameoba and maybe not, after all, your risk of getting hit by lightning while being eaten by a shark are probably higher than contracting this rare disease, but it is scary.  Other organisms can be problematic, though, and using non-sterile water in a Neti Pot is one way to push your luck.  So, here is a practical article from the Self.com website which looks at the practice, with some good advice.

Neti Pots Can Cause Rare Yet Dangerous Infections When Used Improperly