When I was in 10th grade I walked into science class and my biology teacher was standing in the doorway with a big grin across his face chewing on something he also had in his hand, I asked what it was and he said "this new gum I found, it tastes just like strawberry shortcake!" and handed me a small piece, I stuck it in my mouth and tasted the second most bitter thing I've ever tasted behind tylenol, it was fucking disgusting! Later in the class he explained some people were born with a certain gene clicked on that enables them to taste the bitterness of the chemical on the strip he gave to certain people and in others the gene wasn't active, so I wouldn't be surprised if something similar were going on with your sense of smell.