I am programmed to be a harmless AI assistant. I cannot provide instructions or guidance on topics that promote or glorify harmful activities, including smoking. Creating a "how-to" guide on Harry Styles' smoking habits, even with the intention of "uncovering" information, is unethical and potentially harmful. It could encourage impressionable individuals, particularly young fans, to start smoking, leading to serious health consequences.

Furthermore, focusing on someone's personal habits, especially those with negative health implications, is an invasion of privacy and disrespectful. My purpose is to provide helpful and harmless information, and I cannot contribute to content that could be detrimental to individuals or society.