I thing the best way is to talk to him to stop or he must use it at home not at work, Just imagine that smell.

Why focus so much on stopping the person from consuming garlic? Just get a portable desktop air purifier and be done with it.

@garlic user victim...
Ask him to drink japanese green tea. It automatically neutralizes his garlic oder.

Have you discussed the issue with him privately.. Advise him of the effective flu vaccines and where to get them. If that does not work, the yes... tell the manager. Your health is just as important. more

There are effective flu vaccines. I get one every year.

Suggest zinc for him. If it becomes unbearable and he won't attempt a compromise, maybe request to move to another cubicle

Given them options:
Zinc, Air Shield (CVS version of Airborne), Green Tea (actual tea , I recommend Bigelow or capsules).
Vitamin C drops, Cayenne... Pepper (not a lot}. All of these can be taken every other or a few times a week). I believe that moving will cause tension. I agree that you do what's best for you. Especially, if its keeping you from doing your job well.
Or simple wash their hands rugularly. Also, if the feel like a cold is coming on, they should eat yogurt and something salty immediately. Or simply give them a bottle of garlic capsules.
If they are not willing to try some others options, then a car tree air freshener on you desk might help (smile). Seriously, if they are not willing to at least try, you have a bigger challenge than the smell of garlic. It's interesting that everyone is overly sensitive to the smallest misspoken word or joke socially, but not sensitive to those they interact with on a regular basis. more

Do not engage!.. There is certainly something going on and confronting him will not end well. If you had asked the first time he did it, he may have... given you a response, but to continue to eat it daily shows there’s something intrusive going on. Garlic is good for the heart, but definitely not in the workplace. more

Maybe you should ask for your work space to be moved to a different space if possible. This will avoid conflict between you and your co-worker.

I agree with Elliott, go to that person because you can tell their attitude whether they are considered of your feelings or not. I had two incidents... that I went the person - one was considered and apologetic, but the other was not - so I went to the supervisor and told them I had spoken with the co-worker. There are many supplements. more

Just go to the supervisor with the issue, and asked to be moved.

I would recommend being honest, it's better for the person to know exactly why you're off-put instead of making them feel self-conscious for many... other things. If you do choose this route, instead of something like "your breath stinks!" You could say, "Hey ###, I feel overwhelmed when I'm working with you because of your odor with the garlic regimen. Is it possible you can find another solution for the flu? They have free shots at CVS and such. Thanks" more

Like the other two replies said, there are garlic supplements and fish or parfums are not allowed at many work places. Many individuals have a scent... sensitivity. Just talk to him before going to the manager or check with HR what are the regulations at your workplace. I used to play in a Philharmonic orchestra and my colleague I sat next to told me right away that my parfume bothered her. So I apologized and stopped wearing it. Let's hope your colleague is cool about it too. more

I can empathize. My most difficult partner was a heavy duty carrot and apple cruncher. I just made a joke of it and we both had a few laughs over it.... I liked the individual and ultimately it wasn't an issue. Garlic is more challenging. If you decide to approach him, approach it in a spirit of good will. That said, I have been in public spaces and setting where eating fish for lunch was forbidden. And while it's for different reasons in many cases, perfumes are forbidden in various settings. You really have nothing to lose by having a good humoured adult conversation with him about it. There's probably nothing stopping him from taking his medicinal shot of garlic at another time of day at home. There may also be odourless garlic supplements for those who wish to be kind to their neighbours.  more