Adjectives and Adverbs | Grammar Rules
https://www.grammarbook.com/grammar/adjAdv.aspRule 3. The word good is an adjective, whose adverb equivalent is well.. Examples: You did a good job. Good describes the job. You did the job well. Well answers how. You smell good today. Good describes your fragrance, not how you smell with your nose, so using the adjective is correct. You smell well for someone with a cold. You are actively smelling with your nose here, so use the …