expired fragrance

Does anyone have experience using "old" fragrance oils? I have taken a 1.5 year hiatus from soap making. Obviously my soaping oils are all off and need to be replaced, but I'd hate to lose my extensive collection of fragrance oils! I need to do a full inventory and check their expiration dates...

Hi! Newbie. About a month in, here. Last weekend we made a 6 hour round trip to purchase a soapers supplies...it was a soapers heaven! Molds, butters, oils, natural colorant, pounds of lye, essential oils,FOs, micas! I mean stuff is in bulk!!! oh so many goodies that I had only dreamed of...