Well I live close to an intensive pig farm AND a huge chicken enterprise, neither within sight but definitely within smell if conditions are wrong. With humidity and a light easterly breeze the pigshit pong permeates everything, including washing hung up indoors. The chicken farm in itself doesn't smell too much, but the several-times-a-year spreading on the fields of the chicken shit is sickening. The two aromas are as bad as each other, though very different in nature, and I wouldn't like to distinguish which is worse. I suppose that when the pigshit smell is at its peak it permits one to fart silently with gay abandon, nil chance of being pinpointed. There's at least some good even in the very bad (except for Nigel Farage).