Daffodils from yard

The daffodil flower buds were swelling.  One was blooming already, and the snow and ice were coming.  It was time to cut some stems and bring them inside.  In the house, they opened up in a day.  A subtle fragrance signals springtime.  There was just a little bit of snow.  My friend told me that daffodils come with their own anti-freeze so I don't need to worry about them.  There is a thick liquid inside the hollow stems, I wonder if this is the protective substance?