I think that while we are on Atkins, at the lower carb levels, and sticking to the plan, counting carbs, it would be difficult to gain weight from smelling something. The body just does not have the glucose to turn the trick. The biggest problem we are likely to encounter from the "mock" foods is a pcychological reaction. Eating too much of them, or anything will defeat our purpose.

I try to eat natural foods as much as possible.

Good Luck!