There have been a few ocassions where I've reluctantly pitched a couple small baggies of smoked goodies on the 5th day. Cured and smoked, I don't risk after 7 days, and in either case, this may even be pushing things a bit.
One thing to consider is that modern refrigerators are designed to properly chill the food, but need to be loaded correctly in order to operate correctly. If they have a light load, they can warm up too much when they are in the defrost mode. If they are loaded too heavily the defrost mode won't be an issue, but, then the cold air may not circulate effectively throughout the unit. Some foods may even become frozen while others are too warm. We have a family of 7, a 26 cu ft side-by-side for our main unit, a 4.2 cu ft for my Q-fridge (thawing/curing), 2 upright freezers and a 21 cu ft side-by-side for outdoor use in my Q-kitchen in the summer. We're constantly overloading our main fridge, so it becomes a concern to me quite often.
Bear in mind, you're not using the chemical preservatives which the commercially produced cold-cuts have in them. Even the good packaging of certain brands of cold cuts won't stop bacteria after it's opened.
Smoking, increased salt content from using dry rubs, and especially curing will preserve the meat and increase the product's refrigerator life, but it's nothing to gamble with.
I've gotten sick from deli smoked turkey breast about 15 years ago...bag wasn't dated and I was suffering through sinus congestion (my sniffer didn't work for squat). The thing is, meats may still smell fine and it could be right on the verge of getting toxic from bacterial waste to make you sick. When it's turned completely nasty with odor and has a slimy feel, yeah, that's instant trouble. Anyway, one sandwich and less than 8 hours later, I found myself with severe gastro-intestinal cramps and after many fast-paced trips to the large porcelain receptacle, it was finally over...after 6 or 8 more hours of sheer agony. Lucky for me, it was coming out the back door instead of the front.
Point being, don't take the chance on it spoiling. My rule of thumb is that if we may not eat it within 3 days, it goes to the freezer for a "rainy day". And it doesn't matter much to me weather it's candian bacon, corned beef pastrami, or my cured/smoked chicken sausage (all being cured smoked), or juyst smoked ribs, pulled pork, brisket, yard birds...I tell my wife and kids to eat it or freeze it after the second day. If there is a lot of it, chances are it's going to the freezer.
If I'm looking through the fridge for something to cook or snack on and find a package without a date and no-one seems to know how old it is, I just toss it. It's not worth it, IMO.
Trust me, food poisoning sux big time, and I wouldn't wish it on anyone...well, except maybe for Osama Bin Laden...LOL!!!!!!
Eric