When I went through my last treatment, garlic was offensive, and could smell it in people's breath all the time, causing nausea, which seemed like everyone, mostly medical staff. I made a mistake chopping some for cooking, and could smell it on my hand, anything I touched, which seemed like a few weeks, and did not go away even by scrubbing. Don't worry, cause the breath we have when we undergoing treatment, is just as offensive, especially from radiation. Hopefully it soon passes, mine did, and can enjoy garlic in food once again.