Underground bunkers offer a great deal of protection during a disaster. Unfortunately, they can also be incredibly dangerous. They do not provide air circulation. That means they can become incredibly hot when they are filled with bodies. In fact, you could actually overheat and die in an underground bunker.
That means you need to take precautions. You need to poke holes into the bunker and install a fan to circulate the air. However, you can’t just do that and then leave it alone. You also need to disinfect the air before it circulates around the bunker. You can accomplish that with a UV light.
While underground bunkers are very helpful, you have to be careful so you don’t end up overheated. Follow this tip so you can survive any type of disaster than comes your way.