Happens all the time. Doesn't necessarily have to consist of a food that repulses you, but a food that may smell scrumptious but end up being 'meh'
Popcorn - Amazing scent, whether it's butter, caramel, or cheese, especially in the mall. But the actual flavor always let's me down.
Coffee - Even the premium brews. They're great, but the smell is even 5x greater.
Sweet potatoes
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