Dairy farmed up till the mid 90's, grade A milk (ie: drinking milk, milk for cheese has different regs). Regulations out the wazoo, but mostly none for our horses, etc. Cow farts? Odors?, yeah, cows have a distinctive smell, but it never made anyone sick from the odors during barn cleanings. ( I used to call barn cleaning the cow sh*t shuffle lol) "control the food supply, control the people", which is what they're doing with other food too.