There are numerous reasons that chickens die. Don't assume it's the water or waterer....just because it smelled bad. It could have been...but it could also have been other reasons. Disease, predation, etc. Normally, you might see signs of predation - but some of the little killers - just kill for the heck of it...especially pets. Disease may be more probable. If you really want an answer - you should send a couple of the dead chickens for a post-mortem exam. Usually that is done by a "state" lab at the land-grant university or the state department of agriculture. BUT it needs to be done immediately after death.
Go ahead and take precautions with the waterer - that may be the cause. But unless you have some kind of "proof" - you will always be left guessing as to the cause. I'd suggest reviewing all the possible causes - don't just focus on the water.
Go ahead and take precautions with the waterer - that may be the cause. But unless you have some kind of "proof" - you will always be left guessing as to the cause. I'd suggest reviewing all the possible causes - don't just focus on the water.