hmmm... if it's from a relative, don't think they will give you something really bad condition per se. if the yellowing is due to storage, and you don't have extra budget off hand to buy a new one, you can prob get those bug spray and antibacterial spray to spray over, put under the sun for a day? my suggestion lah haha.
Read moreIf you are worried, get another one from Carousel. Or wash it under 60degrees.
it seems like its been kept for a very long time. i would get a new one
Agree with the mom above, prolly due to storage.
i think it's normal for the yellowing.