(It's not rocket science); Machine smelled like burning, as soon as I hit the fog button their was a super loud buzzing noise, and fog came out in weak spurts

Unit never worked - pump probably defective as it makes a loud humming noise - only a few burps of smoke then nothing

It did make a loud noise the first time I used it, but that was the only time it made any bothersome noises.

It made a loud buzzing noise and burped little tiny puffs of fog

Not as powerful as I