The typical fresh car smell is almond wax added to the plastic. Coffe, Aloe or Avocado are also used. Transparent silicon should be more inert than dyed silico

The typical fresh car smell is almond wax added to the plastic. Coffe, Aloe or Avocado are also used. Transparent silicon should be more inert than dyed silicon. I assume that they should be using food grade colorants in any case.