One sneeze didn't warrant too much concern but several?
"Jaskier...." Geralt lifted an eyebrow as he watched the brunette remove the daisy and place it back with the others. Carefully so as if he were afraid the flower would turn into a spider and bite him. He hadn't noticed before how Jaskier's eyes had began to puff up and go red but it was hard not to now. That ought to teach him a lesson to keep his gaze above the belt. At least until he was sure he wasn't killing his date.
In a second, he realized what was happening. The flowers were the culprit behind Jaskier's sudden and unholy amount of sneezes. So much for romantic gestures. Immediately, he pulled the bard from the counter, his hand rough on Jaskier's arm as he led them both away. He hesitated about bringing them out of the bar and stopped just shy of the entrance. Then, he did a quick once over of the bard, checking for loose petals or anything remotely ....flowerish looking.
"What else are you allergic to?" Geralt grumbled out as he continued checking through all the stray bits of Jaskier's hair. There was still plenty he didn't know about Jaskier. That was his own fault. Here he was just thinking of how very badly he wanted to bring the other man into his bed when he should have been paying attention to how he'd almost killed Jaskier again. At least this wasn't a djinn again.
Once he was satisfied that Jaskier was flowerless, Geralt grunted and dropped his arms to his sides. He felt ... embarrassed? Ashamed. Irritated. None of these were Jaskier's fault. Though the bard definitely should have mentioned something the second he'd spotted the flowers. "C'mon, I'll take you to the fireplace. Unless you're allergic to fire and in that case, we'll have to find a different way to get you warm." He pulled at Jaskier's arm again, then dropped his hand to tug at his wrist. "Unless you want to stay here."