Once again: saltpeter is potassium nitrate, not sodium nitrate. Nitrates occur naturally in lots of vegetables.

My post is two sentences, come on.

I could put "salt peter" in scare quotes but I think that makes it harder to understand my point.

It's two sentences that are wrong. You could put "hydrogen peroxide" in quotes, but that won't make it water.

How are you interpreting "ignoring that you linked the wrong chemical"? It's definitely not how I intended it.

The emphasis on only two sentences is because it feels like you're skipping that part.

There are trace amounts of saltpeter and hydrogen peroxide everywhere.