I wish there was a medicine that you could drink that destroyed a cold like the way corvusdraconis described the one that destroyed Dragon Pox for those who were part dragon in her story "Eye of the Dragon, Hair of the Cat". [AO3 & FF(dot)NET]
Drink the nasty tasting potion,
Hack up nasty gunk, spit into bucket,
Watch it implode into nothingness.
Take bath, change into clean clothes, do laundry, return to regularly scheduled day.
(Repeat only if needed)