What does something mean in your example?

In the first sentence, “Something smells good,” the subject and verb agree. “Something” is always a singular pronoun.

Which hot dog smells great?

Something smells good

if you can smell it too! (Singular – correct)

vs. (Narrow – correct) (singular – correct)

What does hot dog smell like? (plural or perfect)

Something smells good! ( X- correct ) The

singular subject something and verb smell don't agree, even though something may not actually refer to a singular object.