It's is highly contagious to plastic models and will often be noticed by a large gap in their legs. A common cure is a Kneadatite known as 'Greenstuff'. Easily applied and handled, available in your closest crafts store. Cheers!
But unfortunately, it is not isolated to plastics. This evil disease may have began with plastics, but it moved cross species when a certain unnamed plastic developed an unusual fetish and bonded with a metal. Their bonding immediately transferred the disease, which seems completely incurable and strikes metals faaar worse than it did in plastics. Nowadays, it is almost cured in plastics as witnessed with the recent perfectly fitting Space Hulk, unfortunately for Azhag the Slaughterer and his huge very holy Wyvern, there appears no such cure on the horizon for the poor metals.