We've got to remember, too, the dinstinction of well and good with the use of linking verbs, including the verb I am. With linking verbs, one uses the adjective, not the adverb, because we are modifying the subject, not the verb.
I am good. At what, you may ask. (Are you good at volleyball, working crossword puzzles, linguistics?)
I am well. (My state of health is good).
I feel good. I - as a person - feel healthy and vibrant.
I feel well. - My ability to feel things is functioning normally. (Note: "I don't feel well," while very popular, is an "over-correction." "I don't feel good" should work just fine.)
That food tastes good. -I like the taste of that food. It has good flavor.
That food tastes well. - Unless the food has the ability to taste, this is impossible.
The dog smells good. - The dog just had a bath. I like his odor.
The dog smells well. - The dog has a heightened sense of smell, and might make a good hunting dog.
While it is true that Americans, in particular, interchange well and good more often than they should, it is usually because of a misunderstanding of how the linking verbs work.