I believe that the original owner smoked in our trailer, however, his son didn't (which is who we bout it from). Not long after we bought it, I decided to clean it.
So while there was no smoke odour, I noticed the (once white) light fixture covers and the bone-coloured vinyl covering had that dingy tobacco-smoke colour to them. I spent a morning with a bottle of Mr. Clean and a sturdy kitchen cloth, and wen over all the walls, and the ceiling fixture covers.
Well, the light covers stayed pretty coffee coloured, so I bought replacements for them, but the vinyl ceiling/wall covering came up about three shades lighter! I went all around using the Mr. Clean full strength, but rinsing the cloth frequently. I went through four or five buckets of warm water by the time I was done.
No stickiness at all though, so I never felt the need to use Future, but lots of people here swear by it.
If it's to be, it's up to me.