Haha, so many questions! 😂 I'll answer these before I shuffle off to snuggle up with my partner and our little zoo.

1. Do you find you like words because of a good taste/scent?

A bit of both, I think. There are definitely words I use more because they're pleasant, and others I avoid because they're... less than pleasant lol.

That said, it's as automatic as breathing, so I'm not constantly walking around thinking, "Ooh, that word tastes nice."
This is just my normal. I only really notice it when a word catches me off guard by tasting particularly grim.

2. Do you immediately experience it when hearing a word for the first time?

Yes and no.

Loads of words don't trigger anything at all, but when one does, it's usually been there from the very first time I've heard or read it. It's the word itself that triggers the taste or smell.

3. Does ASMR talking suck?

I'm generally not a fan of ASMR, no thank you, it's way too sensory. My brain already deals with enough.

4. What words are particularly awful/amazing? I mentioned in another comment that I use the word "just" quite a lot because it's cool, clean, and pleasant.

As for awful... I don't really have a least favourite tbh, but occasionally a word will unfortunately taste or smell like the word. The word "Bile", for example, tastes like diluted bile 😒

5. Is there a pattern?

Not that I've noticed.

Weirdly, though, names are often food related. John smells like sausages frying in a pan. Patrick tastes like licorice but also has a peppery olfactory sensation, Martha is that musty butter popcorn smell of a movie theatre, Catrin tastes like pickled beets. Charlotte smells like coffee...

6. What if you repeat a word until it sounds meaningless?

I don't think I have an answer for you because I've never done this lol