[ Upon hearing a voice speaking to him, he blinked and then paused in the midst of his task to look back to see a young girl there. He immediately offered a kind smile, carefully adjusting the poisons he was carrying. ]

It's quite simple, my dear. These are dangerous compounds and I would be absolutely remiss if I let them fall into innocent hands.

[ In other words? He has ZERO ill intentions for these items other than trying to keep people safe. ]

If someone unsuspecting were to come in contact with these, it could result in harm or even death and that is not an outcome I wish for.