for this prompt [link] something to do with that. Sam waving a thermometer in Dean’s unimpressed face, whatever. Any genre/pairing.
The thermometer is not so obvious but it is little white stick in Sam's hand. Why is Sam smiling? Because Dean never got sick before. Sam seems to have both their share of sickness and Dean just takes care of a messy Sam and jokes about what a delicate flowerl he is.
At first it was just a sore throat, so Dean didn't pay much attention. They've got a lead on a hunt and they followed the evidence into the woods where the monster was supposed to hide. It was night and they set up a trap and crouched behind a bush waiting for the monster to come. Just as a shadow flickered between the trees facing the trap, Dean sneezed. The sound surprised them both, and Dean sneezed again, just in time to shove his sleeve up against his mouth to muffle the sound. When he removed his arm he saw snot clinging to the sleeve and it was one of his favorite coats. Before Sam could comment, they heard something moving around them and there was no doubt they just exposed themselves, and they had to get away quietly. For a while they were being hunted by the thing they were supposed to hunt. A cold wind rose and Dean kept sneezing, as quietly as he could. His' head was getting heavy and throbbing with his movements, his eyes watering from the incessant sneezing, and he had to wipe his snot off constantly . At some point he tripped over himself and fell, heard Sam shout his name before him and the next thing he knew, he was caught by the ankle, and being dragged belly-down through the woods at a painfully high speed. The claw around his ankle was tight enough to break his bone, but it was nothing compared with the dirt and stones and rotten leaves that stuffed his throat everytime he opened his mouth to make some sound so Sam knew where he was, and the cuts and scratches and bruises that kept adding in his face and palms and forearms and bare belly, and yeah, his clothes all screwed up. Eventually Sam found him before the monster was ready to kill him, and wrestled it to the ground so Dean could get up and get the hold of their weapons. But Dean didn't kill it right away. He actually punched and puched it hard until his knuckles got all raw and split up. Much unsatisfying as the effect (it was a pachyderm) was, the sensation paid off. And only until then did Dean kill the monster properly, and wiped his nose once again on his already ruined sleeve with a vengeance.
Back to the motel room Sam cleaned Dean's wounds and helped him changed clothes. Dean was sicker now, using up all the tissues to blow his nose. He was pissed off. It didn't make sense for a man who survived Hell and Purgatory to be knocked down by a cold or something, and what happened back there was positively the most humiliating episode in his whole hunting life. So when Sam sat by him and waved a thermometer in his face, he was all the more irritated. He could see Sam's barely contained smile. The little bastard totally enjoyed manhandling his big brother and taking care of him. "Dude." Sam said, beaming like a scientist who just proved a theory he'd working on years, and that was it. Dean wouldn't give him a chance to call him a dedicate flower. He'd just take medicines and sleep it off, maybe would sleep less than required because yeah Dean Winchester is not a dedicate flower that needs attentive care when it gets sick. After several rounds of swatting hands it was apparent that Sam was getting high like a puppy that just saw a delicious bone and wouldn't accept being waved off. Maybe Dean would just play along, because he is the best big brother in the world.