I've been sitting on the side lines here... keeping my mouth mostly shut.

I think nasal irrigation is creepy. I would never do it, just because.

It is not so expensive to buy STERILE irrigating solutions. Distilled means nothing. It means that there are no minerals in the water. But the collecting containers with regular distilled water are NOT sterile. Who knows the factory conditions present in preparing distilled water?

Sterile Sod Chloride for irrigation or Sterile water for irrigation seems to me
to be a safer alternative. Both require Rxs from doctors.

I consider excessive or careless sinus irrigation similar to cleansing colonics or enemas.
Nature intended certain orifices of our body to be ONE way only. Introducing liquids backwards, defies the normal functions, IMO.

So I am a bit relieved to read Cyclelops' posts.

The olfactory bulbs in the nasal passages are a conduit for drugs/bacteria and viruses right into the brain.