Do not give TUMS to a cat, and do not give milk to a cat unless you want litter box filled with diarrhea. Cats should get water only. Cows milk is not a normal addition to cats diet. Ever see a cat drink milk in the wild? Cats, along with dogs, and every other animal on the planet will fart. If your cat has EXCESSIVE gas, runny stools, or vomits, should take to vet. But first, is cat indoor only or indoor/outdoor? If outdoor, you have no idea of wha cat has ingested to cause gas. If indoor only, have you changed catfood brand or type?
Are tums safe to give to a cat?
Food effects animals in different ways. You may have to change your food. It took me months to find a food that wouldn't give my rotty smelly gas. And I mean SMELLY.