The Pura UVC Bottle provides effective protection against 99.9% of germs and bacteria to purify your water.  Most users of reusable bottles will be familiar with the nasty smells and odours left lingering in their bottles, even after being washed.  This is due to germs and bacteria which have built up and continue to grow, unless cleaned fastidiously, after each use.  With your Pura self-cleaning bottle, you will notice there is no build up of gut-wrenching odours or smells, as the bacteria and germs are being treated by UVC light, so your water is clean, pure, tasty and smell-proof!