What's the harm of the crematorium corpse truck?

I think the crematorium corpse truck is very harmful. However, crematoriums must have cremators to do this. Everyone who works on Tai Shigong's body must have it, otherwise no one can send the dead back to the crematorium. Nothing to do? Nothing to do? I think one of the dead is afraid and the other is heaven. It's scary that my family cries and screams all day. Besides, it's smoky there, and I don't think it's good for people's health. Then you deal with ashes or poets all day, I really think. Really not good. That job should be harmful to your health.