This is why we should be killing pigs with nitrogen, rather than CO2. CO2 is how a mammal determines it is suffocating, meanwhile the air is mostly made up of nitrogen so we ignore it. However, it’s precisely this which makes it dangerous to humans working nearby (also the fact that CO2 is heavier than air so you can have open pits), and it’s ruled too expensive to do it humanely.
This is why we should be killing pigs with nitrogen, rather than CO2. CO2 is how a mammal determines it is suffocating, meanwhile the air is mostly made up of nitrogen so we ignore it. However, it’s precisely this which makes it dangerous to humans working nearby (also the fact that CO2 is heavier than air so you can have open pits), and it’s ruled too expensive to do it humanely.
Or we could you know just not gas and kill pigs.