I have not tried this triple combination specifically, but if you mix lemon juice with baking soda, you will get a reaction that releases carbon dioxide as a gas which causes bubbles. This is the same reaction you get with baking soda and vinegar - it's just that you're using lemon juice (citric acid) as the acid. Below is a URL that has a decent short description of the chemical reaction.
If you mix liquid soap, the change in surface tension of the liquid will cause bigger bubbles to form, but the chemical reaction is the same.
So this becomes like blowing soap bubbles, except that the lemon juice and baking soda reacting to create carbon dioxide replaces your breath.
The cn3 and Mo2 in baking soda reacts with the colours in a prism of reaction making it harder to even understand. The answer is non of the following are dangerously reactive thus reaction occurs chemically, if you add sulfate the process doesn't react making a chemical odor. Of the three smell, process of reaction, and temperature of the substance.