The author noticed that LLM-generated writing and AI-generated websites often exhibit similar patterns and structures, which they term 'ai-smells'. These patterns include the use of certain phrases, sentence structures, and design elements that are overly familiar and generic. The author is not opposed to the use of LLMs for creative tasks, but rather observes that the output can be recognizable and lacking in diversity. This observation is based on the author's experience with using LLMs to polish their math blog writing.