Why does the water boiled in this kettle smell and taste chemically? Any boiled in a plastic kettle in my home is fine.

I've been using the same kettle on my stove for about a year and I hadn't cleaned it even once until last week.
A while ago I started noticing these weird white chucks that would come out with the water but I just figured that it was because I get a lot of use of out my kettle.
It turns out that the white chunks are actually limescale.
I did some research on it and thankfully limescale is not harmful to ingest. However, it's pretty gross to look at and I certainly wouldn't want to serve a cup of tea to a guest that is filled with strange white flakes.
So I figured out how to clean my kettle with stuff I have at home.
All you need is some regular cooking vinegar to do the descaling for you.
There is no need to buy expensive chemicals that you wouldn't feel safe using on a cooking product anyway.
Start by rinsing out your kettle with warm water.
Then, fill half of it with water and the other half with vinegar.
Place it on your stove and let it come to a rolling boil.
Then, just leave it there over night.
When you wake up in the morning, dump out the water and vinegar solution.
Take a long scrubbing brush and scrub the inside of the kettle to remove whatever limescale is left.
If there is still some caked on, you can repeat the steps over again.
If your kettle is clear of the grime, simply rinse out a number of times with soap to get rid of the vinegar taste/smell.
Voila! Your stovetop kettle is clean and no more unidentified chunks in your tea!