Here are some tips to help you prevent that from happening and to keep your fridge hygienic --- reducing the chance of food borne illnesses.
- Clean out the fridge regularly. Use vinegar or lemon juice to cleanse and disinfect without your having to worry about heavy rinsing due to using chemicals in your fridge. Consider taking shelves and drawers out and soaking in the tub to make them easier to clean and to be sure you've gotten every inch of the fridge.
- Keep an open box of baking soda in the fridge and in the freezer. It'll help absorb odours. (Tip: pour down your sink when you replace the baking soda (every other month) and then pour some vinegar afterwards. This will help deodorize your drains)
- Don't forget to clean freezers too, in order to keep ice cream and ice cubes tasting fresh.
- Organize your fridge and freezer carefully so that food doesn't "hide" with a chance to go bad or get freezer burnt and contribute to odours. Date the food so you'll know how old it is and be very careful about leaving meat in the fridge put it on a plate, for instance, to keep juices from leaking to other areas. Clean it out once a week to keep it clean and hygienic.