Garlic burps! Yuck 
Large doses of Airborne seems to always work for me.
LOL!!!
Supposedly, the capsules do not cause that problem.
I've only ever used the raw garlic, which you MUST chew, lest it "passes right through" ala corn.
Vit C is one of the active ingredients in Airborne?
I know you've touted their praise in the past.
On a side note: I know a guy down the lake who takes garlic caps every day and never has a mosquito touch him; come to think of it - neither does his wife, but I don't know if that's because of the garlic or twenty-plus years of marriage.
Maybe the main mechanism through which garlic works is it keeps people far enough away from you that you avoid their germs.