First, walls rarely had asbestos in them. There are some, but unless you have it tested you can not be sure. A test would be around $25. As to the door, that will not help and there is really no large amount of material leaving the room. The best fix is to patch the holes in the wall. That will eliminate any in the air. It also sounds like you aren’t worried about his health. If there is asbesots, you need to have it removed or sealed. His health is more in danger than yours. Asbestos starts impacting people 10-40 years after exposure and usually at least 20 years later. That is a bigger impact on him.

His name is hitler.

You are a fantastic parent.

Seeing as though this is in the gambling section, the only way to reslove your issue would be to play russian roulette with each other. Winner gets asbestos.