Modern pig farms stuff as many pigs in living crates as possible. Everything is almost completely automated. The modern pig grow out operation involves tiny metal spaces where many of the full grown pigs can’t turn around. Their feed, water, air, and temperature are automatically controlled from a central source. All their wastes are automatically pumped out of their metal pens and go into vast lagoons of pig shit. Cleanup is largely automated as well, so no need for maids here. The problem is, the cleanup isn’t always complete.
These lagoons of pig droppings cultivate certain bacteria that disinfect the pig feces. Once the manure has been lying in the lagoon for a long enough time, it is then pumped out and sprayed into the air. That’s right-pig manure is aerially blasted onto surrounding land. If you have ever driven by a pig farm and caught some bad wind-you can be sure it’s not the Taco Bell burrito you just had. The smell of these airborne manure blasts are enough to make anyone retch and heave for hours.
Think of the nastiest smell you’ve had the displeasure of smelling and multiply that by, say, several million times in severity. That’s the smell of the modern pig farm. Thanks to inhumane concentrations of otherwise smart and sentient pigs, pig farm crank out millions of tons of liquefied pig waste every single year. This produces nothing but bad news for the environment.