Cleaner, but Lost His Job

Once upon a time, there was a cleaner named John. He worked in a big supermarket.
Because of the COVID-19, many workers in the supermarket lost their job. He feared that he would lose his job like them, so he wanted to work very hard.But the supermarket was so clean that there was no place to clean up. He is worried about that. Suddenly, he came up with a special idea. In front of the shoppers, he make a drop of dropping and smeared it on the floor. All the supermarket was filled with the special smells.
At last, he lost his job.