When I opened the door, someone came into my house to go to the toilet

This is due to suboptimal ventilation of the toilets and the fact that the septic tanks are not being cleaned. In general, latrines are more common in rural areas, and there are relatively few toilets in urban areas. However, there are many toilets with poor sanitation conditions and cannot be cleaned in time, such as toilets on construction sites. >>>More

It may be that the pipe is not connected well, there are only two ways, one is when no one uses it, see what is not connected well, the second way is: to remove the odor, buy a box of cool oil, open the lid, put it in the corner of the toilet, pay attention to the best try not to wet the water, and please use a knife to scrape off the upper layer of cool oil every once in a while, because it relies on the volatile cool oil smell to remove the toilet odor, so after the upper layer is volatilized, scrape with a knife to reproduce the lower layer. Anyway, scrape again every once in a while, depending on the situation, the main purpose is to remove odors.

You may have acute urethritis, this disease can cause symptoms such as stinging pain in the urethra, purulent discharge, etc., but it is not certain yet, it is recommended that you go to the urology department of the hospital, and after examination and diagnosis, active treatment, if it is the above disease, it is necessary to use antibiotic treatment, and the specific medication needs to see whether it is gonorrhea or non-gonococcal urethritis.

This is anal prolapse, it is recommended to go to the hospital for examination and treatment.

Let's go to the hospital. It's better to just have hemorrhoids.