Kitty is Sick

I have mentioned before that I am the person to two cats, one black one that likes cheeseburgers and one orange one that likes doritos. They're both my babies, but Karl-Heinz (the orange one) was my baby first. He's a great big, manly kitty - well, less manly these days :) - and a mean scary hunter. But he seems to have caught cold, poor thing, and just can't shake it. I don't know quite what to do, so I have been watching him and, twice a day, forcing raw garlic down his throat. I know that must be unpleasant, but if it really is a cold, it will help sooner rather than later.
It sounds quite cruel, but actually garlic is not only antibiotic, but also antiseptic, and it will blast all the little bugs in his system, and he'll be able to breathe again. He's drinking plenty, but not eating a lot, and obviously feels terrible. His head is stuffy and he can't really hear me call him, and he sneezes a lot.