I had the same, corrupted is the right word. During the period my smell and taste was corrupted there was a big set of foods and smells that smelled and tasted exactly the same, kind of like burning plastic but without being so disgusting.

At the same time I was oblivious to certain smells, I remember one time I was walking a dog with a friend and friend complained about heavy smoke smell in the air - I took a deep breath and all I could smell was fresh cold air.