When I was a child, we would visit my grandmother who had chickens running around the yard. We would, of course, eat the fresh eggs and the occasional chicken. I never noticed a difference in the taste of the eggs while we were visiting, but when we got back home, it took me weeks to be able to eat store bought eggs again. It wasn't the taste that made the store bought eggs inedible for me, it was the smell as they were cooking. After a week or two, the smell wasn't as nauseating and I would be able to resume eating the store bought eggs. It seems that at least for me, my nose is more sensitive than my taste buds. I quit eating ground beef, until I found a local source for grass fed beef, for the same reason.