Water... Literally

Once, I put water on the stove to heat up for something or another. Then I discovered that there's a mountain of dust on top pf my cabinet. Next thing I know, I smell something putrid and look down to see the pot the water was in smoking in a weird way and the water all gone. Long story short, there was stuff other than water in the water which stayed in the pot as the water boiled away and then burnt.