Last night I came home from a weekend away to find my Neohelix albolabris, Forks, retreated very far into its shell with wood lice having moved in. As I didn't smell anything, and seeing that his shell did show some of his body was still inside when I held a light behind, I left him in the tank over night. Upon checking on the snail this morning I did notice a faint odour when I smelled the shell. I think Forks is a goner. It was a pretty cool snail and I'm glad it stuck around so long.