This is water hammer and is caused by rattling pipes that are not secured down properly
maybe bcuz to save water..
It can stink if it is not flushed or it is dirty. In some cases, there could be a leak at the base, and the standing water around the toilet has an odor.
A toilet might make a burping sound when flushing due to air that was trapped in the pipe. Sometimes giving the toilet a quick plunge will prevent this.
I do not know if popcorn can be flushed down the toilet. So, I wouldn't try it.- Ashton Smith
The sewer
Depends on if it needed to be flushed or not.
Bad venting
Water and waste
Cotton buds SHOULD NOT be flushed down the toilet. Anything flushed down the toilet that is excrement or toilet tissue my block the sewers and cause backup of sewage effluent into homes.
In ancient Egypt
No you can't
think the drain may be slightly blocked. Your best bet is to call a plumber now to fix it. If you leave it too long you may have toilet water coming up in other areas in your house. You can try to fix it yourself but most of the chemical treatments don't do a lot.