How about the swimming pool? What's the smell of water?

In addition to the chlorine smell mentioned above, there is also a rotten smell called smelly water pipes or fishy smell in swimming pool water. The source of this smell is mainly iron-oxidizing bacteria in the water pipe or saliva, nose and phlegm stuck on the back of the overflow. Iron-oxidizing bacteria are bacteria that can promote iron oxidation, especially in groundwater and tap water, which occasionally smells like this, especially in Kaohsiung. The presence of iron-oxidizing bacteria represents incomplete chlorination of water quality or unknown chlorine in groundwater. The method of elimination can be dealt with by shock. Generally, it is more convenient to use non-chlorine peroxide, and the presence of this odor can be completely eliminated within 30 seconds by adding 20ppm. If it is caused by dirt on the back of the overflow, it is useless to shake the pool water, because the source is not the pool water, and cleaning the overflow is the only choice.