Last spring I was discussing  problems involving scented products with a friend who is a farmer outside of Edmonton.  He is well known in the area for his purebred cows.  He mentioned that his wife likes to use a lot of scented products including laundry detergent and fabric softener sheets.  When his cows are calving, he actually has to keep spare clothes in the barn that his wife has not washed because the scented clothing upsets his cows.  I guess you have to be a cattle farmer to understand and recognize an upset cow.