Recently i purchased a second hand laptop ,an Thinkpad X200s.I was thrilled to found it in almost pristine condition and at a bargain price(180 eu). When i received the laptop i found out that it reeked out of cigarette smell.So strong the smell was,it gave me nausea. My god,only thinking that the previous owner was a medic.The irony. I had to found a solution to getting rid of that smell. Googling around,i found a mixed bag of home made solutions. I decided to clean the laptop first. Disassembled the laptop to pieces only to found out that all the internals were clean as a whistle,but smelled like an ashtray. After cleaning each piece first with a cloth soaked in distilated water with a drop of clean vinegar,then with a cloth and isopropyl alcohol. After that ,the laptop smelled less,but still was more to be done. I put the laptop in a bag with 4 cotton ballls in wich i dropped fresh squeezed lemon juice and vanilla perfume,and a sock full of rice and a plastic cup with baking soda.Tied the bag and let it do the magic during one day. Whoa,the smell was almost gone.One more day into the bag and i will have a nice smelling laptop.