The toilet drain spout is squared

óÅ180mm¡£

Food and grease stains left in the water pipes are decomposed by bacteria and produce gases, which are the source of the foul smell of the sink. Therefore, food and oil do not flow down the drain, which is the first countermeasure to prevent foul odors. If the stench has already occurred, all-natural baking soda powder is a great deodorant. >>>More

Smoke from the sewer pipe is not a good way to do it - the water flowing down the upper floors and the oil smoke going up will not drain smoothly. It is recommended to take the flue. If you want to exhaust smoke, you also need a 45° tee (inclined upwards) to exhaust smoke.

No, unless you want to stink in the bathroom. Pipe drainage can only be bonded with pipes, punching is not advisable, or find a professional waterproof master to investigate, I hope to help you!

A little higher, because there is a backwater bend in the toilet to prevent the sewer from returning to the musty smell.