Toddler says she smells milk in my breasts

Hannah
My almost 4 year old weaned at 2.5 years. I am now 29 weeks pregnant with baby 2.  Yesterday she( 4 year old) announced to me that she could smell milk in my hockies( breasts) when she was sitting in my lap. Do you think she can really smell it or is she just curious and anticipating me feeding the baby like I fed her? Just curious!!