Fear the Walking Cast.
Friend with similar problem rubbed it down with cleaning vinegar, repeated applications with a sponge, and then clean that off with water. After a couple of days he was approachable again.
And if the smell is impregnated into the plastic, you could try cling-wrapping over it and a bunch of newspaper overnight For some reason this works with tupperware type plastics, where the smell atoms transfer in some sort of magic process to the paper.