Ianto let out a breath of relief that he didn't even know he was holding when Sulu responded that he was alright. He rubbed his hand along his back, although only slightly, because it was apparent to him as well that he was pretty much all that was keeping Sulu upright. As it was, it took him a minute to figure out what Sulu was talking about, when he mentioned bringing anything back aboard, before he realized he'd meant the flowers.

"...maybe I should get the samples for you, instead. Since... Well, we left your kit over there in the field anyway." He looked to Sulu, running a hand slightly over his back. "D'you really think that's a good idea, though? I mean. Bringing something quite as potent as that back with you, especially considering..." He took a breath. "God, you must really be allergic to it..."