Nope, my UMFF only sounded like a high pitched (tenor) bull frog when you breathed in and out.
You might check that Horseshoe shaped exhaust port at the bridge of your nose, some have reported it was installed inside out. If you look closely at that piece you will see the holes are tapered with the smaller end outward.
If you have a classic with the humidifier you might check the silicone coupler between the machine and the tank, for that one, you slide the tank off the machine, insert index finger inside metal ring and pull the coupler out a bit, then slide the tank back on using only it to push the silicone ring back in the machine.
Got any cats? they lke to claw your hose and put holes in it.