Long-term low-concentration exposure may cause headache, dizziness, fatigue and other systemic symptoms, as well as chronic rhinitis, pharyngitis, bronchitis, decreased sense of smell and taste. At the same time, long-term contact will be integrated into the blood. Investigation shows that people who inhale low concentration sulfur dioxide for a long time are not easy to recover from typhoid fever and cold, and most of them are accompanied by chronic respiratory diseases. At the same time, sulfur dioxide is also the cause of cancer. The risk of lung cancer and skin cancer will increase. Long-term release of sulfur dioxide in an area can also lead to acid rain.
You said you could smell it, which means the concentration is not too high when it spreads to your home. You can't smell it at high concentrations. And after a long time, you will gradually stop smelling it. Because the sense of smell is impaired. This is a slow process. If it is hydrogen sulfide, it will die soon.
You should confirm whether the sulfur dioxide produced by the combustion of S and oxygen or the sulfur dioxide produced by the combustion of hydrogen sulfide. If it is hydrogen sulfide, insufficient combustion will affect the central nervous system. When the content of hydrogen sulfide reaches11000, people will die instantly.
Generally speaking, 500 meters is a safe distance. The safety here is not the safety of health standards, but the safe distance to escape and evacuate in time in case of leakage accident.
If you can smell it, I suggest you sue him in the environmental protection department. However, now the government's credibility is enough to prosecute.