It might be the food to blame

I remember I once had a full english breakfast (bacon, scrambled eggs, toasted bread, tomatoes) served on a hot plate

and there was a round dark red cookie thing which looked very suspicious to me so I left it untouched.

Later I found out it was made from pigs blood! What a gross

I thought how can they eat that
Every animal in the buchery takes lots of stress before he dies and that stress concentrates in the blood of that animal. So I think it might pass to people who eat these cookies or half baked stakes (with blood) and it might be the cause of angryness ?