So in case you weren’t aware, there was actually an earlier instance of one of the twins touching armor because it looked cool, which of course triggered a curse immediately upon making physical contact.
Matt: So [Vax,] you're going over to the armor. You're getting the armor for Pike? All right, as you reach out and grab the golden chain mail on it, the cold air around the chainmail is noticeably piercingly cold to the touch. Make a constitution save.
Laura: Oh that's why it's still-- Oh no!
Travis: What was it?
[…]
Matt: Natural one. […] All right. As you guys are all doing this, you hear the sudden (groans) this clenching of breath, and you glance over real fast and find Vax has fallen onto his back, and his fingers are curled back, and you can see this dark energy that seeps into his body for a second. You can see his veins pulsing a little bit. You feel your form-- there's no physical damage taken to you whatsoever, but you sense this sapping of your strength, and your breath is shallow. You imagine this is what an elderly person would feel like. You have this lack of energy.
Matt: [...] Pike comes over to you, Kima runs over to you and they both take a look at you. Pike starts inspecting you, using her medicine. And Kima, they both look at each other, pass a few notes back and forth, and they both agree. "Well, it appears this dwarven individual, when he came to his end, was not very happy and in doing so left a very strong curse behind on his body." Look about to each other.
Vex: Everything okay in there?
Vax: (wheezing) No.
Scanlan: Is he dead?
Matt: No. You are considered cursed, which means you have disadvantage on all your ability checks and attacks.
