If you go out to eat at any eating place "YOU" are eating some Calcium Hydroxide in some kind of food !
Only if you "NEVER" go out to eat or only eat all raw food from your own garden and never any kinds of bread products, then maybe you have not eaten it!
Those people who bring up such silly ideas of objection , need to do some research first so they do not make such a "FOOL" out of themself!