How do you remove a foul smell from a refrigerator?

The best way I have found to open a clogged drain tube on a refrigerator is to check both ends of the tube for any visible clogs. If the tube is clogged at the top,an easy rinse is the best way to fix the problem. Fill a syringe with warm water and squeeze up and back until the clog is removed. If that doesn't work, get a fairly stiff length of solid wire and rotor-rooter the clog out. Now, if the tube is clear then you should check the drain that comes out of the freezer area, where you took the long drain tube out. Clean that out with first the wire then the ear syringe. If it is still clogged, then you have to take the evaporator cover off and see if the drain trough is clogged or if the evaporator is full of ice. If this is the case, then you have to clear the ice with a hair dryer until it is free of ice. If none of these suggestions work, then you have defrost problems, which can include some but not usually all of the following: # bad defrost timer # defrost heater # defrost overload. But on the bright side, approx. 90%of the time, you will find the main long defrost tube clogged, so your problem should be easy to fix.