>>7253092I've been smoking weed around my toy collection for 15 years, dust is a far more pressing concern than any perceived resin buildup ever had been.
If you're worried, give your figures a wipe with a warm paper towel and see what comes off, chances are they're beginning to collect dust which discolors toys.
Also quit being a faggot about your neighbors, they're not bothering you. Just think from their perspective, they have to live above a weirdo and his toy collection, hearing his hentai videos through the thin walls when he thinks he's being quiet enough but definitely isn't.