We have all encountered the driver whose vehicle makes a loud sound when driving by them, or perhaps that person is you.
If so, you need to heed warning. When your muffler makes a loud sound when driving, this could indicate a hole within it, and yes, this makes it dangerous for you to continue driving.
Your best bet it to take your vehicle to a mechanic right away.
In fact, the loud noise can ultimately get you pulled over, so driving around with a loud muffler is just not ideal.
If you are wondering if your muffler has become a safety hazard, then it is certainly time to have it checked.