It seems to me that water gets an unpleasant smell if I leave it for a few hours in the bottle. I don't get that effect with other glass bottles.
I am very satsfied with them, this rose gold bottle was a birthday present for my friend anf she was delighted. I choose this Equa bottle because I have two Equa bottles and I am very,very satsfied with bottle, design, how I can washing them and also using. So, I am thinking now which one choose to be my new Equa