Interesting, yes. my biological father was a smoker, something I only learned of shortly following my knowledge of his death (I never met him and my brother found his death announcement amidst his own search to get answers, something we were both doing unbeknownst to each other) So I had a thought it might be him, trying to see how I turned out. Or a complete stranger spirit I have also felt that perhaps my deceased grandma and Uncle were looking down at me at times- but perhaps that's just wishful thinking during times when I am doing things that remind me of them.