Hi. What a terrific gift. I agree with everyone else, it should be washed. I doubt anything it would get on it after you wash it would be a problem. After washing acrylic yarns I've used look and feel nicer.
This is my first try at this forum and I'm pretty new to knitting so go easy on me.
I find that everyone here is really wonderful. My questions get good answers, usually more quickly than I'd expect. You found a great a great forum.