I think that cows do have a very sensitive sense of smell.
Several years ago Mrs Grubby and I were down in Seaton on the south coast of Devon. We took a walk and found a heard of cows lying resting in the corner of a field. We stopped to look as they were so close. As we stood admiring the beasts I was suddenly stricken with a severe bout of the wind. This was a result of a dodgy chicken Vindaloo the night before.
Mrs Grubby was not impressed. But what did impress her was the way all the cows suddenly stood up and walked to the other end of the field !!
Grubby.
