Funny story from tonight...
My DH and I went out to dinner and he was eating a Caesar salad. I made a comment on how I didn't know how he could eat that...I find the smell rather revolting. He couldn't figure out why I didn't like the smell as he said it was just buttermilk and Parmesan cheese and there's nothing I find wrong with those smells. He looked vaguely green when I told him that Caesar dressing was not made from buttermilk anything, that Caesar dressing should never contain buttermilk, that batch was homemade and had anchovy paste (not Worcestershire sauce, but actually anchovies paste....totally different smell), egg, oil olive, lemon, garlic, pepper, salt and fresh Parmesan.
He HATES anchovies. I don't know how he couldn't smell it, let alone, not taste it.