When to throw away Food?

Some things are use by - such as milk, so I will always make sure its finished or thrown away before the use by date. The best before date is just a guide, so you can use it a few more days without it doing harm. Bread can actually be eaten up to three days after the best before, as can cake and biscuits, etc. The main one to avoid is old dairy products, they can be really nasty if they don't agree with you. The oldest thing ive eaten is a piece of three day old pizza which i'd kept in the fridge but I was a student at the time! As for your husband not getting food poisoning, everyone's physiology is different and so some people have stronger immune systems than others, another factor is you build up resistance to bacteria over the course of your lifetime, sometimes its good to let a little bad bacteria in, so the good bacteria can fight it and learn how to deal with it in future. (like when you have a vaccine which has a bit of the virus in it so your immune system fights it and you are then immune).