How can i compare objects base on their odor and taste?

To compare objects they must have similar characteristics. For example, you compare the ones based on their odor separately from the ones based on their taste.

Once you do that try to separate them again based on the type of odor or taste they emit. For instance, the ones based on their odor can be separate whether they are:

On the other hand, the ones based on their taste you can compare them whether they are:

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