I used to sit right outside the breakroom. I wanted to stab anyone (ahem, former boss, looking at you) who heated up fish. She tended to heat it along with broccoli. The smell was awful, and it lingered for a long time.
I now have a CW on some odd diet who sits and eats raw garlic and drinks straight vinegar 2 - 3 days per week. It is disgusting. I like garlic, but smelling it that strongly, coupled with vinegar, makes me want to throw up.