I'm a food smeller! There's a particular decadent Christmas goody leftover at work that has the most heavenly, intense smell. They think I'm crazy because I go into the kitchen, open the tin and just inhale and then go back to work (only one coworker knows I'm fasting).
After the first few days of the cleanse, I can sit and watch people eat and don't have any trouble with wanting to eat but sometimes the smells can be nauseating -- especially oily or fatty foods. The biggest problem with being with people who are eating is that they grill you on why you're not eating.