Toilet image. Free Pick: Strangely, there are cases where the toilet smell does not go away even though you clean the toilet every day. Especially in the summer, even if you clean in the morning, the peculiar stinging smell sometimes comes back in the afternoon. It's not just because we clean less. Experts explain that this is because the high temperature and humidity in the summer simultaneously accelerates the chemical reaction that creates bathroom odor and the growth of bacteria. Bathroom ···