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No, it should be the main smell of ammonia and skatin.
In addition, you can't see the carbon monoxide in the toilet or anything else.
Generally speaking, it will not be related to the upstairs decoration, maybe there is a foreign object blocked, it is recommended to ask the master, it will not be very expensive.
Change a better floor drain, a better four defenses are OK.
Glossary: Nothing to do.
Pronunciation: wú suǒ shì shì >>>More
I don't know, I can also put some orange peel in the toilet, orange peel can be.
1. Use vinegar to remove the smell of the toilet, one of the wonderful uses of vinegar is to remove the odor, place a small cup of vinegar in the bathroom, and use the air to volatilize and let the vinegar smell replace the smell. A small glass of balsamic vinegar is used for about six or seven days, that is, it can be changed once a week. >>>More