Like GG said - you can hear and read a lot of "stuff" that just ain't so. Let's take, "I heard that the recent issue with tomato salmonella was caused by some of the genetic modification being done," as an example.
There have only been two GM strains of tomatoes ever sold on the market - one for eating fresh and the other for the specific purpose of making into tomato puree.
The fresh eating tomato, the Flavr Savr, was only sold in California and a few outlets in the Mid-West. They didn't live up to their expections of having more flavor and being sturdy enough for mechanical picking - they bruised easier, had less flavor and costs about twice as much in the end after going into commercial production. They tried to grow them in Florida but that didn't work because the were prone to fungas and rot due to the humidity. They have not been sold since 1996!
The other, which was only sold as canned puree, was only sold in the UK - and has not been sold there since 1999!
Now - if you can connect the dots and get a link to the salmonella outbreak from GM tomatoes which have not been sold since 1996, and in a form in which they never existed (roma and plum) - "You're a better man than I am, Gunga Din!"
"It ain't what you don't know that gets you in trouble. It's what you know for sure that just ain't so." - Mark Twain