Eggs. They smell like farts and taste worse and yes I have tried them but they are my most hated food on the planet.
Olives-just don't dig them.
Shellfish- Mussels etc. I'm not big on salt so that could be a factor with shellfish although I do love fish and sushi is fantastic (it's the rice and preperation that is the sushi part and not raw fish as u can get veggie sushie too).
Garlic- a little bit is OK but not to the point of overpowering everything. I like subtle flavours and if you cook garlic enough it becomes sweet and I don't have a sweet tooth. Plus garlic breath is a major turn off