I got one of those electric kettle you linked. It is made of plastic - the boiled water smells, tastes like plastic. This is not just the first time, even after a dozen times it tastes the same, and it is horrible.
I don't know anything about aeropress, but it is not a good idea to buy a plastic electric kettle. stainless steel ones are better.
It's just your kettle that's bad. An electric kettle made of plastic should not impart any flavour on the water. I have used a bunch, never had a problem (and I consider myself highly sensitive in that regard).
I don't know anything about aeropress, but it is not a good idea to buy a plastic electric kettle. stainless steel ones are better.