WWW.SPOKESMAN.COM writes: "Q. How can you tell if a can has BPA in its lining? I have been eating canned salmon after reading that it is wild-caught and preferable to farm-raised salmon. Now I wonder if I am getting too much BPA. A. BPA (bisphenol A) is tasteless and odorless. It is a component of the plastic resin that lines many metal food and beverage cans. It also is found in hard clear plastic such as that in ..."