So I just washed some wine glasses and put them upside down to dry on the kitchen island and after a short while they started making this fizzling sound. There are small bubbles appearing in the pools of water under the glasses. I was wondering what could be the cause of this? The things I could think of is: 1) Are the glasses/surface contaminated with some sort of baking powder? 2) A decrease in pressure within the glasses creating some sort of inward movement of air?