Was My Grandmother Letting Herself Be Known By Scent?

My grandmother was from Hawaii and was diagnosed with Stage 3 cancer (I cannot remember what type she had). She passed away in November two years ago, and all of us were upset, but knowing it was going to happen soon. I certainly was upset, because she helped me change myself a bit. I also had so many questions after she died, like was she going to be okay? Was she no longer suffering? Several weeks later, a neighbor had brought her grandkids for mom to watch over them. My sisters, the kids and myself were in the living room, next to my mom's office. The neighbor and my mom were talking about my grandmother. The youngest turned to my sisters and I and asked if we could smell a vanilla cake candle where we were sitting. My grandmother liked soft smells such as the Vanilla Cake scented Yankee Candle. Sure enough, there was a faint smell of it, and there was NO candle of that scent burning or open. The funny thing was that the scent was staying on the couch next to the office door, on the cushion nearest to the door. When my mom and the neighbor heard what we were talking about, they went silent. That's when the scent began to travel. It went to the front door, came back through the living room, then stopped at the office and stayed there for a bit and then entered the office. After a small while the smell faded. None of us were wearing perfumes, carrying or holding anything that held that scent. And the candle that we smelled was in my grandmother's bedroom closed with an air-tight glass lid. And there are 8 people who smelt the same scent. Was my grandmother curious and wanting in on my mother's conversation?