A balloon popped in front of me and whenever i try to hear conversations from far away, it gets muffled. what can i do about this?

Use mylar balloons: Mylar balloons don't make the popping sound when they break or get a pin poked into them. A typical latex balloon popping should not generate enough force to cause eardrum damage. That means a person whose hearing is different after a typical balloon pops has either a coincidental change in hearing or a perceptual change in hearing. His primary care doctor can evaluate, and hear the whole story.