That’s why I never order ice with my soda/pop/coke!
You are right - esp. if you are in Mexico. A close relative drank margaritas that were being served in the market to ‘advertise’ the tequila, (he couldn’t turn down a FREE margarita - blended).
He became VERY ill with ameobic dysentary - and it took months to recover.
May I also add: NEVER say ‘yes’ when they offer you lemon in your water. (Unless you know for a fact that the lemon was thoroughly washed before it was cut, and the hands that squeezed it into your water were sanitized immediately before.)