This is all absolutely fascinating. I'm sure you're all right, that farmers spray all sorts of stuff on their land and crops, none of which is terribly good for us (or for wildlife)
I'd give anything to know exactly what it is that causes my husband so much suffering every year. When we've visited Cromer or Sheringham, he feels so much better for an hour or two, especially with an onshore breeze.

It's not good for him to be doped up with anti-histamines and decongestants for six months each year. And he has to work in that state, poor chap. We've even considered moving to the coast, but house prices are horrendous up on the Norfolk coast.

On a more cheerful note, I've been out in our front garden today and manually (round of applause please!) pulled a ton of weeds out of our gravel drive and front borders. The buggers will no doubt be back soon, but I feel rather virtuous. Time for a toasted crumpet dripping with butter and a nice cup of tea I feel.