He's not going anywhere anytime soon! Let's just hope he's not hiding a gun.

You should probably check his pockets - better safe than sorry!

'Grab' the scientist to check his pockets.

A strange little key - it's time to jam it into every lock until it works!

The key will unlock the first aid cabinet on the first floor.

Bandages, ammonium chloride, and pony-themed adhesive bandages.

The ammonium chloride may be - if it was combined with another chemical, we could make some smelling salts.

In a place that's completely illogical for a chemical to be. Naturally.

You wouldn't want chemicals interfering with your industrial equipment, right?

Well, the chemical is on top of some industrial equipment.

It's on top of the hydraulic cart that you moved out of the way earlier.

You can't, not after we moved it earlier - try looking for a way to move it back.

You have more than one option when going to the back of the building.

Go to the back of the building via the leftmost side, then push the hydraulic cart twice.

You can then go up a floor, and grab the flask on top of it.

Combine the sodium carbonate with your ammonium chloride to make the good smelly stuff - the interrogation can begin!