Just to clarify, our whip cream is made of three things: 1) Heavy Whipping Cream from whatever your local dairy is, 2) Our Vanilla Syrup (which is also in the hot chocolate) and 3) CO2.
I am a barista and I make whip creams every day I work, so I hope this helps.
Also, the only way I can see cross contamination ever happening is in the cold beverage...