If I feel a possible cold or sickness coming on, I really start loading garlic into my foods heavily and I take a few extra garlic capsules that day too. (truthaboutabs.com)
You can also buy garlic capsules or even eat it raw if you dare! (mystrengthtraining.com)
Odorless garlic capsules are available on the market, so you no longer have to pinch your nose while taking them. (islasfoods.com)