Strange Smell from AQUA

I usually buy AQUA Mountain Spring Water as it is more or less the cheapest and available everywhere in Singapore amongst other mineral/drink water. Recently I bought a dozen of AQUA and noticed strange smell from one of the bottles. I had already consumed half of it and although I was not certain about the relation, I had a stomach upset... It smelled like smoke or some sort of chemical. I contacted AQUA by e-mail which was printed on the bottle (f282828@singnet.com.sg). It took them three days to come back to me by e-mail. In that e-mail, they asked me my contact number. I gave that to them. It has been a week since but nobody from AQUA has contacted me. I guess I will never buy AQUA...