Blankets still the trend

Maia and Wynter both still comfort themselves with their blankets. Wynter has recently developed a liking to one particular blanket over her other one. They both are the same color with same fabric. She typically smells the one she favors to identify it. I have no idea what she smells that tells her, "this is the one." Mom and I decided to test her. We marked a pink why on the blanket she prefers. Then today I swapped it for the other blanket while she went to the bathroom. Astoundingly she identified the imposter and wondered where her blanket was!!! So funny!