Sensory Overload a view inside

I found a video on youtube that shows a little of what sensory overload is like.  I am thanful that I didn't have it (did have something for sound at one point, but never really serious), but understand how painful it could be from the fear of experiencing it).  Please note that this is not how everyone experiences it (some people feel overwhelmed by being around too many people, smells, and even the clothes people wear.  Each case is different.