There should be no problem with the boiler. The toxic part should be concentrated in the production workshop. And the air is still circulating. Besides, your boiler should burn natural gas or waste water and waste gas. In short, this process is definitely the least toxic in the factory, but if the pressure is too high, you may also be transported off the surface of the earth. In any case, keep a high degree of vigilance at work. Run in case of emergency. Isn't Fengdu Ziguang unattractive? Don't make mistakes.