Do his family members know about this?
You bet they do, it's mandatory equipment particularly after Meatloaf night, if not for only personal gratification & air quality concerns, but for safety reasons too.
Unfortunately, the public at large still remains sadly uninformed as to the widespread dangers of "holding it in" out of mere vanity. In this still shot taken from a high speed camera that was coincidentally filming a beachside speed-nosepicking contest, we see the effect of expansion when ultraviolet rays from the sun meet percolating gases originating from undercooked onion rings eaten by this hapless female beachgoer.
Just seconds after this frame was shot, the resulting blast completely obliterated the surrounding area within a 25-yard radius, injuring several small children, 3 seagulls, and a small sandcastle. The innocent young man sitting in the background was never found, and only his cap remained, which was found floating in the breaking surf. Witnesses accounts pieced together afterwards confirmed that he did try to selflessly contain the blast when he recognized the danger in front of his eyes, yelling "Thar She Blows" while jumping on the bloated lass in an effort to absorb the explosion with his body. Sadly, this sudden application of pressure on such an already stressed "container" seems to have only contributed to bringing the uncontained and spontaneous gaseous emission forth.
After water toxicity tests indicated the beach could be safely re-opened to the public many months later, that particular stretch of beach was named after him in recognition of his selfless bravery. And thus is the legend and story of the one they called Don Redondo.