SC - If I understand your post to me correctly you are saying that one source suggests Minoan volcanic traces around 1480-1470 BC. This is well within the 1500 BC plus or minus +- 50 years time frame.
RC - I am working on a theory that this same Mt. Etna eruption could have been the trigger for the Exodus events. Regional (plate wide) vulcanism could have caused the floor of the Red Sea to rise up, and than sink again as a magma pocket was emptied. Remember the “pillar of fire by night and pillar of smoke by day”? Volcanic ash from Etna would blow south over North Africa in certain seasons, get washed into the upper Nile and the excess phosphate cause a major red tide, dead fish, more frogs since fish were not eating their eggs, flies eating all kinds of dead stuff, illness of cattle and people trying to drink contaminated water. [Remember the various problems caused by the phisteria bloom in the Chesepeake Bay a few years ago from fertilizer runoff.] The fact that the Jewish refugees ate unleavened bread even makes sense. Dry baking crackers and flat breads would kill micro-organisms. I once ate something from a health store called Essene Bread. It used sprouted grains (water) and had been baked at a very low temperature leaving the interior very moist and only semi cooked. It was delicious incidentally, but if I had polluted water I would want it cooked a lot more. It would not surprise me if much Egyptian leavened bread was undercooked, especially if people were weak and ill and had no slaves to bring firewood, or dried dung. Let’s face it, there is a scarcity of forests in Egypt.
There isn’t anything on the ground to show it; that particular quote was to illustrate that any such (and hypothetical) eruption must have been a great big nothing, as it had no discernable impact on Minoan civilization. What is seen instead is a series of fires, and the towns cleaned out by whomever sacked ‘em. The idea of a huge eruption was dreamed up in 1939, and hadn’t any basis on the ground then; since then any little tidbit has been seized on as evidence, and each time has been abandoned in its turn.