A couple, one rather tall and the other much smaller, almost borrower sized, with the signature ears and flitting tail.
The larger of the two has hay fever and has big itchy sneezes.
The small one is quite allergic to dust and catches cold quite easily.
They both have the kink.
Small loves hearing his boyfriend trying to stifle his sneezing fits and seeing him attempt to quell the itch in his nose
Tall adores small’s sharp dusty sneezes and is absolutely enamored by his sniffly snotty colds.
Maybe tall is very conscious of the size and sound of his sneezes and always attempts to cover and muffle them at all costs, apologizing profusely no matter what.
Maybe small doesn’t give a shit about covering or wiping his nose when he’s ill and tall has to trick him into cleaning himself up. Maybe tall secretly likes that but has to pretend to be annoyed to get small to take care of himself.