I have this habit of having a water of bottle near me when I go to sleep. Not a while ago I used a plastic bottle for that - I refilled it each day or two.
I read somewhere that plastic encourages bacteria growth (and in general not too healthy to use), and decided to replace the plastic bottle with a stainless steel one.
It has a cork and I close it after each use.
The problem is - the water gets smelly after a day. It get's this weird smell it's hard to explain. Smells maybe like mold. I cleaned the bottle with soap and hot water, but the smell returns after a day.
I thought maybe I should store the bottle without the cork?
What would be the "healthiest" way to have a bottle of water near you, with minimal implications like bad smell, bacteria growth, etc?