What's going on? The seal between the bottom of the toilet and the waste pipe in the floor, called the wax ring, has been compromised. The wax ring works like a gasket around the base of the toilet.
Scrape off the old wax ring from the flange, toilet base, and floor using a putty knife. Inspect the flange for cracks, rust, ...
Once solid or liquid waste is in the toilet it is flushed and carried through a pipe which leads to the sewage works. The inventor of the toilet was John Harrington, who was born in 1561 and died ...