Sorry to hear about your birds, Tasha. Please, if you're going to go to someone's farm or even the feed store, practice good biosecurity (both for your flock and others'.) It's easy to forget when we're so concerned and worried, but unless proper measures are taken, you could spread an illness to another flock quite easily (and vice versa.) In addition to the obvious hand washing, clothes and shoes worn while caring for your birds should not be worn off your property. Good luck - I hope all are just suffering minor irritation from the spraying and it's not anything worse. Sending best wishes for a complete recovery.