Why does the Xiaomi Smart Pet Care Air Purifier have an odor after one month of use?

After prolonged use, the filter absorbs more pollutants, which can cause a slight odor. Additionally, factors such as prolonged use and a relatively humid environment can contribute to odors. If you are sensitive to smells, you can notice these odors. It is recommended to run the purifier at the highest setting for a while to reduce the smell, which is not harmful to health.
To avoid the risk of the filter absorbing moisture and producing an acidic smell, it is advised to keep the purifier running 24 hours a day in areas with high humidity and to clean the bottom pre-filter approximately every two weeks.