Does each color have a different scent? If so what are they?

Yes they do. Here is the information from the manufacturer on the different scents:'Available in 4 colors and fragrance combinations: Bliss Pink with lavender, rose and cherry; Green Refresh with eucalyptus, rosemary and lemongrass; Orange Balance with nutmeg, vanilla, coconut and almond; Original White, unscented'

Does the pink one have a scent

Thank you for your inquiry. The Aromatherapy Pack that is pink in color is scented with lavender, orange, rose and cherry blossom to heal the body and uplift the spirit.

Is the original bed buddy washable?

This can be spot washed as needed, but not machine washable.

How do I heat this without a microwave? (I received as a guft, but haven't had a microwave in over a decade).

Google says to wrap in tin foil, place in preheated oven at 250 F for 30inutes. I've never done this as I have a microwave. It's worth a try but I would watch carefully as the cotton blend covering and handles could catch fire. Good luck.