I agree that gator tastes more like fish, but it's not exactly like any fish I've tasted. IMO, it's better than most white fish, if it's prepared properly & the texture is different. The "taste like chicken" reference was more of a joke, because some people say everything tastes like chicken. I should have made that more clear.
The smell & taste of durian may depend on how ripe the fruit is.
I've had coconut picked from a tree in Mexico that tasted exactly like vomit. That was one of the worst things I've had to force myself to swallow. Needless to say, I didn't go back for seconds.