Re: do hookah diffuesers do more than just mellow ou the "bubbly" sound??
Not only does the Heba Diffuser cut down the bubbling noise when you take a hit. It is also supposed to do the following: filter the nicotine more thoroughly, provide smoother smoke, and provide more smoke.
Now if you want to go into the science of how the diffuser works-- that's another story.
But as mentioned in previous comments. You can do the same with a bunch bendy straws.
Oh and also. I hear that after a while (about 15-30 uses), the diffuser's plastic starts to wear and affects the taste and overall experience of your hookah. But that is just what I hear....