If they ask just say your friend gave you the code because they weren't going to use it. Never say you bought it.
Hi bw1985,
I booked a flight using the companion fare code I purchased from you (no issues btw, and great transaction).
However, with travel restrictions in place, I need to cancel the fight. Alaska is offering a 100% refund on the fare I paid, but do you know if the companion fare code used when booking gets reinstated? Or is it lost forever?