Â¹. The commercial pet food industry started in 1860 with James Spratt's invention of the first dog biscuit in England. Made from vegetables, beef blood, wheat, and beet root, Spratt reportedly was inspired by observing sailors throwing hardtack to dogs at the docks.he commercial pet food companies do know a lot more about what cats need, but that still doesn't mean that the pet food industry is making food that is best for your cat.
The second thing that makes farts smelly is consuming foods that are high in sulfur. Foods such as cauliflower (and the rest of the cabbage family), eggs, cheese, garlic, onions, and meat are notorious for producing smelly farts because of their high content of sulfur.
At low levels, hydrogen sulfide gas has a strong odor similar to rotten eggs. You can smell hydrogen sulfide gas at lower levels than may cause health effects, so smelling the gas does not always mean that it will make you sick. However, at higher levels, your nose can become overwhelmed by the gas and you cannot smell it. At higher levels, hydrogen sulfide gas can make you sick and could be fatal. Hydrogen sulfide gas occurs naturally in crude petroleum, natural gas, volcanic gases and hot springs. It can also result from bacterial breakdown of organic matter and be produced by human and animal wastes.