Can you inflate with mentos if chew them up after drinking coke?

Chewing up Mentos after drinking Coke will not cause significant inflation or any noticeable difference in the reaction. The effect of Mentos and Coke reaction relies on the rapid release of carbon dioxide bubbles caused by the irregularities on the Mentos's surface. Chewing the Mentos alters its structure, reducing its surface area, and therefore diminishing the number of nucleation sites for the carbon dioxide bubbles to form. As a result, the reaction will be less dramatic or might not occur at all.