At an earlier point in the game, I had the laser torch, the fuse and the Goliath's warp distributor cap. But after visiting the Genetix lab, becoming a fly and then becoming human again, they've disappeared from my inventory.
I don't remember this being an issue from playing the game back in the day, and I couldn't find it mentioned in walkthroughs, either.
Is it simply a bug, or are these items somewhere to be found?