For all water bottles, plastic, aluminum, glass etc. is always the trick when you purchase to rinse or wash them well, or fill them with water and leave it for a while and then throw it to remove odor and flavor again, kind of plastic.
Many walkers or people interested in camping and the great outdoors in general use as a water bottle outdoor classic military water bottles more or less modern. Aside from those employed up to 80 (aluminum water bottles with screw cap attached to it by a chain with cloth lining, followed by similar civilians, 70 years, with “machine”), you can find the classic Italian bottle with cap screw wide aluminum secured by a leather strap, used by the Italian army units until the 90, then replaced by hard plastic internal lining similar American derivation (bag, with fur inside) and mess bowl with built-in aluminum folding handles (stuck on the bottom, was placed with the bottle inside the bag). The bag closes with two eyelets that snap on separate buttons, on the back there are two metal loops to attach to the waist belt waist, (so called A.L.I.C.E. attack = All-Purpose Lightweight Individual Carrying Equipment). Modern plastic ones have a similar bag made of cordura with a small pocket used to keep potabilizzanti pads.