Of course, most parts of our country are disinfected with chlorine and bleaching powder. We all know that these two things are harmful to the body and have a taste. At present, ozone is the safest disinfection method in the world, but it is rarely used in China because of its high cost.
Generally, there will be activated carbon in the filter material of water purifier, whose main function is to absorb different colors and smells in water. As for what brand you say is good, it depends on your own image: Langshide and Qinyuan are all good brands.